Since AIController can only possess one pawn at a time, you have to spawn an AIController using Spawn Actor of Class and then use its Possess node to posses the new pawn. So if you have 10 pawns, you have to create 10 AIController as well.
Since AIController can only possess one pawn at a time, you have to spawn an AIController using Spawn Actor of Class and then use its Possess node to posses the new pawn. So if you have 10 pawns, you have to create 10 AIController as well.