Copy to Live Loops    ⌘

Copy the selection (regions) to Live Loops cells.

I need to investigate using Live Loops. It is such a different way to use Logic than as a simple recorder or arranger.

Work with Live Loops cells in Logic Pro — Apple Support

Using the Copy to Live Loops key command in Logic Pro, you can copy various combinations of regions to new scenes, depending on what you have selected in the Tracks area. This is especially useful for populating a Live Loops grid in an existing project containing many different regions, sections, or markers. You can copy any of the following to Live Loops: