Can't find blueprint to add to actor

So I’m following this tutorial on youtube ([Eng] Let's Create Fortnite's Building System: Stat System 2/2 #03 - YouTube) and it has been working fine until I went to add the child blueprint to the game character actor (at [Eng] Let's Create Fortnite's Building System: Stat System 2/2 #03 - YouTube), when I clicked add component i could not locate the blueprint there even though i created the parent one as an actor class. If I drag it into the blueprint it gets added under the CapsuleComponent as a physical thing where i cannot modify its characteristics. I’m probably making a rookie mistake or something but I cannot locate any solutions to the problem online. Help would be appreciated.