How to make a singleplayer minimap work for multiplayer

I used this video

How can I make this correctly work in a multiplayer environment, where a separate instance of the minimap is shown for each client?

You want to do all interface and HUD stuff on the client side rather than the server, the server in most cases wont have anything to do with the HUD that the player is seeing other than certain functions under the hood like updating score etc.

Here is a link to a large ammount of information that you might find useful, it doesn’t directly answer you’re question but it will give you more of an idea about what needs to be done in a multiplayer game.

http://cedric.bnslv.de/Downloads/UE4_Network_Compendium_by_Cedric_eXi_Neukirchen.pdf

I currently have the “HUD” widget being created on Event BeginPlay.