MusicTechHelpGuy breaks down a Logic Pro grid setting that trips up a lot of self-producers: absolute versus relative snap.
Absolute snap forces the front edge of a region onto the nearest grid line, every time you move it. That's useful when you want something locked precisely to the beat.
Relative snap moves a region by musical intervals (like a full bar) while keeping its original offset from the grid untouched. He demonstrates this on a vocal take that lands slightly ahead of the beat, shifting it two bars over without dragging its timing back onto the grid line.
The takeaway: if a performance has intentional feel or drift, relative snap lets you reposition it without flattening that nuance.