coming from unity as well. Enabling/disabling objects mean how to enable/disable an actor in unreal in playmode.
Based on my research there is currently no simple one-liner support for this. You basically need 3 things and you do that for every child component of that actor.
Here are some threads that discuss this.
And here is from the official documentation. I really find this useful especially if you would like to do a feature comparison of both engines.