How do you lock a piece so that it is unable to be moved?

Hi- Newbie here (again)

I would like to have ‘at-start’ pieces that are locked in a location and not able to be moved by players. They are layered, so they act as counters. Players should still be able to right click on them to change layers. The layers work now (due to help on another thread), but the pieces still are moveable.

I can’t seem to find a trait or other way to ‘lock them’ in the place I define as an at-start piece.

thanks in advance!

Does Not Stack trait, configured for being able to select normally, but move never.

Worked like a charm! Thanks!