raise over entity

How does the "raise over entity (PgUp) command work? I've tried several ways of trying to get this to work to no avail. What is the order of entity selection and what keystrokes are necessary? Thanks.

It can be confusing, yes. Maybe this thread gives the answer:
https://forum.librecad.org/Changing-object-order-Draw-order-Modify-order-tp5717000.html

Maybe this will help : https://librecad.readthedocs.io/en/latest/ref/fundamentals.html?highlight=raise#ordering-entities