You can have multiple entity configs on a single spawner and have all of them spawned. We do this in the City Sample project which you can test in the MassCrowd level with the various vehicles.
What engine version are you using? In 5.3, there was a bug with duplicating Mass entity config assets where the GUID for the asset would also be duplicated. This would cause the spawner to only create entities from the first entity config added. If you recreate one of your Mass entity configs from scratch, can you add it to the spawner with the other one to see if both are created?
hello,james ,Can I ask you a question? I’m encountering a major difficulty when using Mass AI. I can’t get it to interact with smart objects. I’ve configured the ‘find smart’ and ‘claim smart’ methods in the state tree, but the smart object is always in an ‘unfound’ state. I’m using UE5.4. Could you tell me what’s going on?" https://www.youtube.com/watch?v=NAyQ-z-a9Zg&t=35s
I would be glad to answer, but could you make a separate post and tag me in it so I am notified of it? It helps so other users could find that question in the future, and in the event of needing more than 1 reply, it will not continually notify the user who asked this question originally.