I have set up three master slides for the internal pages of a presentation, each with a different footer image.

I want the footer design to rotate through them. Specifically, I'd like the master pages to rotate 1,2,3,1,2,3,1,2,3 as the presentation progresses.

The document will be large. Is there a way to get it to alternate through the three master pages automatically? Or do I have to select and change each page to a different master slide manually? This would mean that if I added a page anywhere, they would all be out of order and have to be changed again.

I am on an Apple computer using Microsoft® Word for Mac version 2024. Sometimes, options aren't offered in the Apple versions, so I can find a PC if I need to do it there!

Any ideas?