Snap Mode: Beat — Logic Pro keyboard command of the day (KCotD)

  Snap Mode: Beat

Set the snap mode to align objects on the beat.

Snap items to the grid in Logic Pro — Apple Support

The Tracks area includes a grid that helps you align regions, automation points, and other items with the time divisions in the ruler. When you perform any of the following actions, the items move according to the current Snap value: