Insert Section at Playhead (Global) ⌃⌘V — Logic Pro keyboard command of the day (KCotD)

  Insert Section at Playhead (Global)    ⌃⌘V

Pastes the region on the clipboard into the current track. All tracks (regions) have time inserted.

Add or remove gaps in a Logic Pro arrangement — Apple Support

Sometimes you may want to remove an entire passage from a project—for example, you may want to remove the regions of all tracks between bars 17 and 20, so that all regions (and bar changes, tempo changes, and global score symbols) from bar 21 on are moved four bars to the left, closing the gap left by removing the four bars.

Show/Hide Arrangement Track ⇧⌘A — Logic Pro keyboard command of the day

  Show/Hide Arrangement Track    ⇧⌘A

Show or hide the Arrangement track. The ‘Show/Hide Arrangement Track Only’ command remove all Global tracks from the display, and toggle the visibility of the Arrangement track.

Edit arrangement markers in Logic Pro — Apple Support

After you add arrangement markers to the arrangement track, you can use them to rearrange your project. You can select arrangement markers, move and copy them, replace them, and delete them from the arrangement track.