Lock position in the Piano Roll Editor in Logic Pro for Mac

There may be times you want to protect some events in MIDI regions from being moved; for example, when they are synchronized to visual events in a movie. You may have already created the music for the scene but then are asked to increase the tempo to match several cuts of different camera angles in the corridor. Changing the tempo moves the events, resulting in events being out of sync. Instead, you can lock the events to an absolute (SMPTE) time position to protect their position and keep them in sync with the tempo.

To lock the time position of events, Enable Complete Features must first be selected in Logic Pro > Settings > Advanced.