UI and Multiplayer

Hello,

I'm creating a multiplayer quiz game for a group of friends at work. The questions and possible answers are to be displayed using Canvas UI elements.

The question is, whats the best way of implementing this? I've tried a Canvas in the scene and all clients see it but cant interact with it. I've tried including a UI per player but even with hasAuthoriity check, every player sees each others canvas. I've tried spawning it on the server to control but i get a warning about spawning a canvas prefab.

If there is to be a common UI that all clients see, how can I 1) allow each client to interact with buttons etc, and 2) track which client clicked the button?

Any help or pointers in the right direction will be hugely appreciated.

SW@NNe