- In Project Settings > Maps & Modes > Local Multiplayer, check Use Splitscreen.
- Use the node Create Local Player, for example in Level Blueprint.
5.1 and 5.2 index bug
There was a bug in versions UE5.1 and UE5.2 that has been corrected in UE5.3. If you leave the index -1 when you create a new player, the associated subsystem is initialized with an index of -1. This creates problems and crashes the engine because the index is not correct. To avoid this, use a correct index. In UE5.3, you can leave the index at -1.
