(VR) Create a menu interactive and launch the matinee after pushing a button

Hey everyone, being a novice on unreal I have difficulty with blueprints !
Whether to create an interactive menu with htc vive, or run the matinee after a clic in the menu, I can’t find a solution despite the very many forums…
So, can you help me please ?
I will try to explain what i want to do !
First, I want to make a menu who work with the Htc vive and interactive ! After pushing the button “start”, the matinee start and right after that, we start with the “MotionControllerPawn” in the levels !

thanks you in advance for you reply!
and sorry for my english :open_mouth: