The template contains a simple enemy example, but here is a short guide to create your own:

• Create a Nav Mesh Bounds Volume covering the whole level
• Create a BP of HEEnemyCharacter, a BT Blackboard, a BT Tree and a BP of HEAIController

• Assign the BT Tree in the new HEAIController BP

• Assign this new controller in the HEEnemyCharacter BP

• Give the required abilities in the HEEnemyCharacter BP

For more information about enemy behavior, please check the included example BP and BehaviorTree