Adobe Muse | Define elements on master pages for display in the foreground | It's possible ?

Hello, I use Adobe Muse, I read in an article by Adobe, that it is possible to define elements on master pages for display in the foreground. That is, so that certain elements of the master pages would be in the foreground on the child pages. But I’m not able to do the same, someone who has more experience in using Muse,
know how to solve? thankful