How to attach a 3D widget to bottom of screen

Yes, please see my edited question at the end for a gif of how it works. Basically I want to spawn characters at the widget position which is something I’m already doing (don’t mind the clipping, I need to change the Z spawn pos). But I want this to happen in 3D, I want to be able to spawn these actors and in the future I’ll probably spawn particle effects and stuff like that. So as far as I know (which is not much) I can’t do that with a 2D widget, unless I replace the 3D models for textures but it’s not something I want.

It’s working fine, it’s just that I need to figure out how to position and size the widget or whatever I put there for aesthetic purposes