1. Create a Blueprint Character, rename it to Bp_Ai_Follows_Me and add PawnSensing.
2. Click on PawnSensing and set Base Height to 64 (right window)
3. Click on PawnSensing > Event Graph
4. Right click > On See Pawn and recreate the Graph
5. Click on "Class Defaults" in the top bar. See icon
6. Change Auto Posseses AI to "Placed in World or Spawned".

Optional: In the "Capsule Compontent" you can change the RADIUS the avoid mesh overlapping with the player.