This Unreal 5.3 Gameplay Ability System video is about building the Enemy Spawner Actor.
We start by creating the Enemy Spawner Blueprint, based on the Destructible Blueprint, then add a Starting Health value so that the Spawner can live to spawn another day. We copy and update the Material, with transparency, and then create a looping timer to Spawn the Enemy. Lastly, we update the random radius functionality on Hearing and Damage Senses, and make sure they’re not overwriting Handle Sight Sense.
https://dev.epicgames.com/community/learning/tutorials/JplM/unreal-engine-22-enemy-spawner-let-s-make-a-top-down-top-down-shooter