Set and move flex markers in GarageBand on Mac

When you delete a flex marker, any time changes in the area around the flex marker are either removed (and the audio material returned to its original state), or reset to follow the previous flex marker or region start position and the following flex marker or region end position.

You can delete only those flex markers that were manually added or all flex edits that were carried out on the audio file, which includes audio quantization.

You can also change the position of a flex marker in an audio region without changing the timing of the audio material before or after the flex marker.

Delete a flex marker from an audio region

In GarageBand on Mac, do one of the following:

Place the pointer over the flex marker, then click the “x” in the region header.
Double-click the flex marker.

Move a flex marker without time stretching

In GarageBand on Mac, hold down Option as you drag the flex marker.

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GarageBand User Guide

Set and move flex markers in GarageBand on Mac

Delete a flex marker from an audio region

Move a flex marker without time stretching