Manage Shared with You settings on Apple devices
When someone shares content with you from the Music, Apple TV, News, Photos, Podcasts, and Safari apps, Shared with You can automatically organize it into a Shared with You section for easy access. Content that’s shared with you in the Messages app is automatically organized in a Shared with You section in the Music, Apple TV, News, Photos, Podcasts, and Safari apps.
Find out how: To view a task below, select the plus button 
next to its title.
Manage by person on iPhone or iPad
If there’s content shared with you through Messages that you don’t want to appear in associated apps, you can turn off this feature by person.
Go to the Messages app
on your iPhone or iPad, then tap the conversation whose content you don’t want to share across apps.When the thread opens, tap the contact or group icon at the top of the conversation.
Tap Info, then turn off Show in Shared with You.
To learn more, see:
Share content in Messages in the iPhone User Guide
Share content in Messages in the iPad User Guide
Manage by person on Mac
If there’s content shared with you through Messages that you don’t want to appear in associated apps, you can turn off this feature by person.
Go to the Messages app
on your Mac, then select the conversation.Click
in the top-right corner of a conversation, then deselect Show in Shared with You to remove shared content from the Shared with You section.When Shared with You is turned off, you can still pin shared content to show it in the corresponding app.
To learn more, see:
Keep track of shared content in Messages on Mac in the Mac User Guide
Manage by app on iPhone or iPad
If you want to turn Shared with You on or off within the Music, Apple TV, News, Photos, Podcasts, or Safari apps, you can adjust your settings.
On your iPhone or iPad, go to the Settings app
> Apps > Messages > Shared with You, then turn off Automatic Sharing or turn off Shared with You for a specific app.
Manage by app on Mac
If you want to turn Shared with You on or off within the Music, Apple TV, News, Photos, Podcasts, or Safari apps, you can adjust your settings.
Open the Messages app
on your Mac.Choose Messages > Settings or Preferences.
Click Shared with You, then do one of the following:
To turn off all apps: Click Turn Off.
To turn off selected apps: Deselect apps.
To learn more, see:
Keep track of shared content in Messages on Mac in the Mac User Guide