Result: Screen capture - 064dc90f7d74d068964b38e47ba4182a - Gyazo
It even fits on one screen 
Note: Widget graph is completly empty just a button and text there.
Everything is covered in that single screen. I added a text Component just for visuals. You can replace TPS Char with your own Pawn just make sure to do the Toggle Selection Event inside your Pawn. Everything else adjust to your liking. And sorry for Spaghetti to lazy for 2 Screenshots xD
If something unclear feel free to ask.