How to let users walk around in enviroment?

Hello!

I need some extension to let omniverse users move around in museum environment. I saw this great video when Adam drives the car:

So I do not need that car thing, but I need some arrow keys based movement control to all users who are going to log in this museum:

Also some kind of simple avatars would be cool to have for each user.

What is the best way to for this?