Multiplayer Blueprint Issue HELP

I am creating a multiplayer game using UE4 blueprints and have run into a snag. I have the server and client all set up, I can create session successfully and using the client, find a session to which my print strings are saying are being run. The issue is when the player creates the sever they are the only player visible. The client also takes control on their window of the only character on screen. Apologies if it makes no sense.

If you need any images I can post them straight away.