diff --git a/examples/Apps/AppManagement.ps1 b/examples/Apps/AppManagement.ps1
index 677f9e0c3..0e66b83ac 100644
--- a/examples/Apps/AppManagement.ps1
+++ b/examples/Apps/AppManagement.ps1
@@ -5,6 +5,6 @@ $appIDs = @(
 $orgs = Get-GitHubOrganization -Enterprise 'msx'
 foreach ($org in $orgs) {
     foreach ($appID in $appIDs) {
-        Install-GitHubAppOnEnterpriseOrganization -Enterprise msx -Organization $org.login -ClientID $appID -RepositorySelection all
+        Install-GitHubApp -Enterprise msx -Organization $org.login -ClientID $appID -Selection all
     }
 }
diff --git a/examples/Apps/EnterpriseApps.ps1 b/examples/Apps/EnterpriseApps.ps1
index 2526b7b2d..65a069fea 100644
--- a/examples/Apps/EnterpriseApps.ps1
+++ b/examples/Apps/EnterpriseApps.ps1
@@ -24,7 +24,7 @@ filter Install-GithubApp {
         $orgs = $installableOrgs | Where-Object { $_.login -like $organization }
         foreach ($org in $orgs) {
             foreach ($appIDitem in $AppID) {
-                Install-GitHubApp -Enterprise $Enterprise -Organization $org.login -ClientID $appIDitem -RepositorySelection all | ForEach-Object {
+                Install-GitHubApp -Enterprise $Enterprise -Organization $org.login -ClientID $appIDitem -Selection all | ForEach-Object {
                     [PSCustomObject]@{
                         Organization = $org.login
                         AppID        = $appIDitem
diff --git a/src/classes/public/App/GitHubAppInstallation.ps1 b/src/classes/public/App/GitHubAppInstallation.ps1
index 6684d77f4..84507311d 100644
--- a/src/classes/public/App/GitHubAppInstallation.ps1
+++ b/src/classes/public/App/GitHubAppInstallation.ps1
@@ -12,7 +12,7 @@
     [string] $Type
 
     # The type of repository selection.
-    [string] $RepositorySelection
+    [string] $Selection
 
     # The permissions that the app has on the target.
     [pscustomobject] $Permissions
@@ -51,7 +51,7 @@
         )
         $this.Target = [GitHubOwner]::new($Object.account)
         $this.Type = $Object.target_type
-        $this.RepositorySelection = $Object.repository_selection
+        $this.Selection = $Object.repository_selection
         $this.Permissions = $Object.permissions
         $this.Events = , ($Object.events)
         $this.FilePaths = $Object.single_file_paths
diff --git a/src/functions/private/Apps/GitHub Apps/Install-GitHubAppOnEnterpriseOrganization.ps1 b/src/functions/private/Apps/GitHub Apps/Install-GitHubAppOnEnterpriseOrganization.ps1
index 86ad14af4..b4490cc19 100644
--- a/src/functions/private/Apps/GitHub Apps/Install-GitHubAppOnEnterpriseOrganization.ps1	
+++ b/src/functions/private/Apps/GitHub Apps/Install-GitHubAppOnEnterpriseOrganization.ps1	
@@ -9,7 +9,9 @@
         The authenticated GitHub App must be installed on the enterprise and be granted the Enterprise/organization_installations (write) permission.
 
         .EXAMPLE
-        Install-GitHubAppOnEnterpriseOrganization -Enterprise 'msx' -Organization 'org' -ClientID '123456'
+        Install-GitHubAppOnEnterpriseOrganization -Enterprise 'msx' -Organization 'org' -ClientID '123456' -Selection All
+
+        Install the GitHub App on the organization 'org' in the enterprise 'msx' with the client ID '123456' and the selection 'All'.
     #>
     [CmdletBinding()]
     param(
@@ -30,7 +32,7 @@
         # - selected - select specific repositories.
         [Parameter(Mandatory)]
         [ValidateSet('all', 'selected')]
-        [string] $RepositorySelection,
+        [string] $Selection,
 
         # The names of the repositories to which the installation will be granted access.
         [Parameter()]
@@ -51,7 +53,7 @@
     process {
         $body = @{
             client_id            = $ClientID
-            repository_selection = $RepositorySelection
+            repository_selection = $Selection
             repositories         = $Repositories
         }
         $body | Remove-HashtableEntry -NullOrEmptyValues
diff --git a/src/functions/public/Apps/GitHub App Installations/Update-GitHubAppInstallationRepositoryAccess.ps1 b/src/functions/public/Apps/GitHub App Installations/Update-GitHubAppInstallationRepositoryAccess.ps1
index cd6b9905b..4456bd46f 100644
--- a/src/functions/public/Apps/GitHub App Installations/Update-GitHubAppInstallationRepositoryAccess.ps1	
+++ b/src/functions/public/Apps/GitHub App Installations/Update-GitHubAppInstallationRepositoryAccess.ps1	
@@ -7,7 +7,7 @@
         Update repository access for a GitHub App installation between all repositories and selected repositories.
 
         .EXAMPLE
-        Update-GitHubAppInstallationRepositoryAccess -Enterprise 'msx' -Organization 'PSModule' -InstallationID 12345678 -RepositorySelection 'all'
+        Update-GitHubAppInstallationRepositoryAccess -Enterprise 'msx' -Organization 'PSModule' -InstallationID 12345678
 
         Update the repository access for the GitHub App installation with the ID '12345678'
         to all repositories on the organization 'PSModule' in the enterprise 'msx'.
@@ -17,7 +17,6 @@
             Enterprise          = 'msx'
             Organization        = 'PSModule'
             InstallationID      = 12345678
-            RepositorySelection = 'selected'
             Repositories        = 'repo1', 'repo2'
         }
         Update-GitHubAppInstallationRepositoryAccess @params
@@ -28,6 +27,7 @@
         .LINK
         https://psmodule.io/GitHub/Functions/Apps/GitHub%20App%20Installations/Update-GitHubAppInstallationRepositoryAccess
     #>
+    
     [CmdletBinding(SupportsShouldProcess)]
     param(
         # The enterprise slug or ID.
@@ -52,13 +52,6 @@
         [Alias('installation_id', 'InstallationID')]
         [int] $ID,
 
-        # The repository selection for the GitHub App. Can be one of:
-        # - all - all repositories that the authenticated GitHub App installation can access.
-        # - selected - select specific repositories.
-        [Parameter(Mandatory)]
-        [ValidateSet('all', 'selected')]
-        [string] $RepositorySelection,
-
         # The names of the repositories to which the installation will be granted access.
         [Parameter()]
         [string[]] $Repositories = @(),
@@ -80,7 +73,7 @@
 
     process {
         $body = @{
-            repository_selection = $RepositorySelection
+            repository_selection = $Repositories.Count -gt 0 ? 'selected' : 'all'
             repositories         = $Repositories
         }
         $body | Remove-HashtableEntry -NullOrEmptyValues
diff --git a/src/functions/public/Apps/GitHub App/Install-GitHubApp.ps1 b/src/functions/public/Apps/GitHub App/Install-GitHubApp.ps1
index d30dafe98..1dd9febfb 100644
--- a/src/functions/public/Apps/GitHub App/Install-GitHubApp.ps1	
+++ b/src/functions/public/Apps/GitHub App/Install-GitHubApp.ps1	
@@ -7,54 +7,39 @@
         Installs the provided GitHub App on the specified target.
 
         .EXAMPLE
-        Install-GitHubApp -Enterprise 'msx' -Organization 'org' -ClientID '123456' -RepositorySelection 'selected' -Repositories 'repo1', 'repo2'
+        Install-GitHubApp -Enterprise 'msx' -Organization 'org' -ClientID '123456'
 
         Install the GitHub App with
         - the client ID '123456'
-        - the repository selection 'selected'
-        - the repositories 'repo1' and 'repo2'
+        - the repository selection 'all'
         on the organization 'org' in the enterprise 'msx'.
 
         .EXAMPLE
-        Install-GitHubApp -Enterprise 'msx' -Organization 'org' -ClientID '123456' -RepositorySelection 'all'
+        Install-GitHubApp -Enterprise 'msx' -Organization 'org' -ClientID '123456' -Repositories 'repo1', 'repo2'
 
         Install the GitHub App with
         - the client ID '123456'
-        - the repository selection 'all'
+        - the repository selection 'selected'
+        - the repositories 'repo1' and 'repo2'
         on the organization 'org' in the enterprise 'msx'.
 
         .LINK
         https://psmodule.io/GitHub/Functions/Apps/GitHub%20App/Install-GitHubApp
     #>
-    [CmdletBinding(DefaultParameterSetName = '__AllParameterSets')]
+    [CmdletBinding()]
     param(
         # The enterprise slug or ID.
-        [Parameter(
-            Mandatory,
-            ParameterSetName = 'EnterpriseOrganization',
-            ValueFromPipelineByPropertyName
-        )]
+        [Parameter(Mandatory, ValueFromPipelineByPropertyName)]
         [string] $Enterprise,
 
         # The organization name. The name is not case sensitive.
-        [Parameter(
-            Mandatory,
-            ParameterSetName = 'EnterpriseOrganization',
-            ValueFromPipelineByPropertyName
-        )]
+        [Parameter(Mandatory, ValueFromPipelineByPropertyName)]
         [string] $Organization,
 
         # The client ID of the GitHub App to install.
         [Parameter(Mandatory)]
         [string] $ClientID,
 
-        # The repository selection for the GitHub App. Can be one of:
-        # - all - all repositories that the authenticated GitHub App installation can access.
-        # - selected - select specific repositories.
-        [Parameter()]
-        [ValidateSet('all', 'selected')]
-        [string] $RepositorySelection = 'selected',
-
         # The names of the repositories to which the installation will be granted access.
         [Parameter()]
         [string[]] $Repositories = @(),
@@ -74,19 +59,15 @@
     }
 
     process {
-        switch ($PSCmdlet.ParameterSetName) {
-            'EnterpriseOrganization' {
-                $params = @{
-                    Enterprise          = $Enterprise
-                    Organization        = $Organization
-                    ClientID            = $ClientID
-                    RepositorySelection = $RepositorySelection
-                    Repositories        = $Repositories
-                    Context             = $Context
-                }
-                Install-GitHubAppOnEnterpriseOrganization @params
-            }
+        $params = @{
+            Enterprise   = $Enterprise
+            Organization = $Organization
+            ClientID     = $ClientID
+            Selection    = $Repository.Count -gt 0 ? 'selected' : 'all'
+            Repositories = $Repositories
+            Context      = $Context
         }
+        Install-GitHubAppOnEnterpriseOrganization @params
     }
 
     end {
diff --git a/src/functions/public/Apps/GitHub App/New-GitHubAppInstallationAccessToken.ps1 b/src/functions/public/Apps/GitHub App/New-GitHubAppInstallationAccessToken.ps1
index 2291149ad..9535aeb97 100644
--- a/src/functions/public/Apps/GitHub App/New-GitHubAppInstallationAccessToken.ps1	
+++ b/src/functions/public/Apps/GitHub App/New-GitHubAppInstallationAccessToken.ps1	
@@ -84,10 +84,10 @@
 
         Invoke-GitHubAPI @inputObject | ForEach-Object {
             [pscustomobject]@{
-                Token               = $_.Response.token | ConvertTo-SecureString -AsPlainText -Force
-                ExpiresAt           = $_.Response.expires_at.ToLocalTime()
-                Permissions         = $_.Response.permissions
-                RepositorySelection = $_.Response.repository_selection
+                Token       = $_.Response.token | ConvertTo-SecureString -AsPlainText -Force
+                ExpiresAt   = $_.Response.expires_at.ToLocalTime()
+                Permissions = $_.Response.permissions
+                Selection   = $_.Response.repository_selection
             }
         }
     }
diff --git a/src/functions/public/Auth/Connect-GitHubApp.ps1 b/src/functions/public/Auth/Connect-GitHubApp.ps1
index dd11923d2..447028477 100644
--- a/src/functions/public/Auth/Connect-GitHubApp.ps1
+++ b/src/functions/public/Auth/Connect-GitHubApp.ps1
@@ -85,33 +85,47 @@
     }
 
     process {
-
         $installations = Get-GitHubAppInstallation -Context $Context
         $selectedInstallations = @()
         Write-Verbose "Found [$($installations.Count)] installations."
+        $installations | Format-List | Out-String -Stream | ForEach-Object { Write-Verbose $_ }
         switch ($PSCmdlet.ParameterSetName) {
             'Filtered' {
-                $User | ForEach-Object {
-                    $userItem = $_
-                    Write-Verbose "User filter:         [$userItem]."
-                    $selectedInstallations += $installations | Where-Object {
+                foreach ($userItem in $User) {
+                    $userInstallations = $installations | Where-Object {
                         $_.Type -eq 'User' -and $_.Target.Name -like $userItem
                     }
+                    $selectedInstallations += $userInstallations
                 }
-                $Organization | ForEach-Object {
-                    $organizationItem = $_
-                    Write-Verbose "Organization filter: [$organizationItem]."
-                    $selectedInstallations += $installations | Where-Object {
+                foreach ($organizationItem in $Organization) {
+                    $organizationInstallations = $installations | Where-Object {
                         $_.Type -eq 'Organization' -and $_.Target.Name -like $organizationItem
                     }
+                    $selectedInstallations += $organizationInstallations
                 }
-                $Enterprise | ForEach-Object {
-                    $enterpriseItem = $_
-                    Write-Verbose "Enterprise filter:   [$enterpriseItem]."
-                    $selectedInstallations += $installations | Where-Object {
+                foreach ($enterpriseItem in $Enterprise) {
+                    $enterpriseInstallations = $installations | Where-Object {
                         $_.Type -eq 'Enterprise' -and $_.Target.Name -like $enterpriseItem
                     }
+                    $selectedInstallations += $enterpriseInstallations
                 }
+                $(
+                    [pscustomobject]@{
+                        Type   = 'User'
+                        Filter = $userItem
+                        Count  = $userInstallations.Count
+                    }
+                    [pscustomobject]@{
+                        Type   = 'Organization'
+                        Filter = $organizationItem
+                        Count  = $organizationInstallations.Count
+                    }
+                    [pscustomobject]@{
+                        Type   = 'Enterprise'
+                        Filter = $enterpriseItem
+                        Count  = $enterpriseInstallations.Count
+                    }
+                ) | Format-Table -AutoSize | Out-String -Stream | ForEach-Object { Write-Verbose $_ }
             }
             default {
                 Write-Verbose 'No target specified. Connecting to all installations.'
@@ -120,8 +134,7 @@
         }
 
         Write-Verbose "Found [$($selectedInstallations.Count)] installations for the target."
-        $selectedInstallations | ForEach-Object {
-            $installation = $_
+        foreach ($installation in $selectedInstallations) {
             Write-Verbose "Processing installation [$($installation.Target.Name)] [$($installation.id)]"
             $token = New-GitHubAppInstallationAccessToken -Context $Context -InstallationID $installation.id
 
@@ -153,8 +166,8 @@
                     $contextParams['Owner'] = [string]$installation.Target.Name
                 }
                 'Enterprise' {
-                    $contextParams['InstallationName'] = [string]$installation.account.slug
-                    $contextParams['Enterprise'] = [string]$installation.account.slug
+                    $contextParams['InstallationName'] = [string]$installation.Target.Name
+                    $contextParams['Enterprise'] = [string]$installation.Target.Name
                 }
             }
             Write-Verbose 'Logging in using a managed installation access token...'