How do i get a cpp class into another?

I have 2 cpp Actor Classes one is the main ground the other just billboards components. How can i get the Billboard class actor into the constructor of the main ground cpp class actor?

i have tryed:
CreateDefaultSubObject<>(); NewObject<>();

Hi,

I think the Ground_Proximity_Check_Actor should be set up as an Actor Component; not as an Actor.
You can then reference it into the Ground_Setup…

Changing the billboard actor into a component would be a good idea. If somehow you need it to be an actor, use the UChildActorComponent.