Attach a feedback master to a slide master?

I inherited a "master" (and I use that term very loosely) for a project that was created by someone else. After making myself crazy for several modules I'm trying to create a real master so I can stop reinventing things.

The basic premise is showing steps of software with a view it, then practice it series of steps. Yes, I know I can do this with the nifty tool in SL360 but I have no access to the software. Instead I get a bajillion screenshots from the SME to put together. The kicker is this has to look like all the previous modules. To quote Jason Kramer, "If they want it ugly, you build it ugly."

The original builder used layers for the View It sections and had the users click the green arrows after showing the steps. I'm trying to create a master slide that starts with the title image, then shows all these layers, preset so layer 1 points to layer 2, 2 to 3, etc. But it's not working in any of the ways I've tried. Masters don't carry actionable triggers as buttons or as objects so what's undefined on the master can be identified as layer 1, 2 etc. I got this to work for the navigation at the bottom with slides but I guess layers are a horse of a different color. 

If you look in slide view, this is what I need and this is what I've tried.

I have tried building a slide master with the green arrows, a feedback master with the green arrows, applying masters in varied settings and I'm just not getting it to work.

 

Currently, when I use the View it slide master I created, it attaches a random blank feedback master to the layers and I cannot get it to attach a new one. Ideally, I think, if I could attach my arrowed feedback master to this slide, things would be golden. But I can't figure out how. I've identified the different layer masters with blocks of color and you can see how different they are on the different slides. Even the View It master that is showing with a pink block set of layers brings in a yellow block when you click new layer.

I'm totally befuddled by this and am hoping someone has an answer to make this work. I also recognize the very likely possibility of user error here. :) Thanks for any insights to make this work.