Step 1.) Open up the blueprint section in the content browser
Step 2.) Right click on empty space and create a new blueprint. Choose Game Mode as the blueprint type.
Step 3.) Name it whatever you want, I’m going to call it MyGameMode for teaching purposes.
Step 4.) Open up the blueprint, click on the default tab in the top right-ish area.
Step 5.) You should see like 5 drop down menus for things like HUD. You can now choose all the settings you’d like.
Step 6.) Go to world settings, and choose your custom game mode as the game mode. You should be good now :).