Set Nudge Value to Bar ⌃⌥M

Sets the nudge value (the ‘distance’ the object will move) to a bar. I find nudging objects around to much easier and ‘safer’ using keyboard commands with proper values. That’s more convenient than moving the mouse to the toolbar and clicking the little arrow buttons.

Move regions in the Logic Pro Tracks area — Apple Support

Nudge regions by the nudge value
In Logic Pro, select the regions you want to move. Press and hold Option and press the Left or Right Arrow key.

I need to remember that there is a NUDGE button on the X-Touch. Pressing the NUDGE button arms the fast-forward and fast-rewind buttons to nudge forward and backward. Full and complete access to the nudge functions in the toolbar.

Mackie Control Nudge button in Logic Pro — Apple Support

The NUDGE button allows you to move (nudge) selected audio or MIDI regions (or events) in Small, Large, or Temporary Nudge mode