Is getting hard to switch UI between pawns

Hello!
Im struggling with a mechanic that I want to implement in my game.

Is multiplayer and right now you can switch between pawns, when you aim a pawn and shoot you possess it.

The problem is with the UI, I would like to notify to the owner of the UI to change all the widgets to be the new pawn.
For example if you are a cat and then switch to the dog, the portrait in the UI should change to the dog.

But I cannot find how to do that. I dont know where to make a delegate or how to get notification when the client has possessed a pawn. Because OnPossess just executes on server.