How to create in game menus with blueprints?

Basically I want to make a system so that when the character approaches certain objects, they can bring up flat screen menus in the virtual world instead of the traditional HUDs using UMG. Ideally the menu will be interactable through getting the player’s line of sight and clicking on buttons on the projected screen to adjust things like enemies spawned in a given volume, choice of weapon for the player and game difficulty etc. (I don’t think the specific features are too important, I just want to know how to adjust my own personalized settings through this sort of menu)

All I have now is enabled input when the character enters the box collision of the object (I know, that really accounts for nothing). While I’m quite familiar with the Unreal Editor I’m very much a noob when it comes to implementing gameplay features and I’ve struggled to find resources pertaining to VR specifically. Any help would be greatly appreciated!