With the recent update I added few new blueprints that a lot of people wanted for coop games, where a level could end by reaching a safe-zone, and it requires all players to be present, and because some levels can be large, a checkpoint was also added. Kinda like L4D2 or Earthfall.
It’s not very difficult to set all of this up.
1. Add any number of checkpoints and level complete blueprint (only one).
2. By default when all players reach the end, a widget will be displayed to pick the next map, you can however override this and make it automatically load the next map (if you want to have a specific sequence in mind), but this is entirely optional.
3. Set the coop game mode in world settings
That’s it!
Related tutorial:
FPS Game Starter Kit 