GarageBand '11: Edit arrangement regions
After you add arrangement regions to the arrangement track, you can use them to easily rearrange your project. You can select arrangement regions, move and copy them, replace them, and delete them from the arrangement track.
When you move or copy an arrangement region, all of the music in that section of the project is moved or copied, including the regions on every track in the section and control points on every automation curve in the section. If any tracks in the project are locked, you should unlock them before editing the arrangement regions in the project.
To select an arrangement region:
In the arrangement track, click the arrangement region.
To select multiple arrangement regions, Shift-click them.
You can’t select discontiguous arrangement regions.
To move an arrangement region:
Drag the arrangement region to a new position in the arrangement track.
When you move an arrangement region between two existing arrangement regions, the region to the right moves right to make room for the new region.
When you drag one arrangement region directly over another one in the arrangement track, the two regions switch places (all their content is swapped).
To copy an arrangement region:
Option-drag the arrangement region to the position where you want to place the copy.
When you place the copy between two existing arrangement regions, the region to the right moves right to make room for the copied region.
To replace an arrangement region:
Command-drag an arrangement region directly over another one.
To delete an arrangement region:
Do one of the following:
Select the arrangement region, then press Delete to delete the music in the timeline below the arrangement region so it is empty. Press Delete again to delete the arrangement region.
Select the arrangement region, then press Command-Option-Delete to delete the arrangement region and all the music in the timeline below the arrangement region.
When you move or delete an arrangement region, the sections to the right move left to fill the deleted section, closing up the empty space.