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.