Animate a UMeshComponent

Greetings UEers,
I coded up a simple UMeshComponent (similar to the CutomMeshComponent plugin) so that some geometry could be generated on the fly. There’s probably some way to get animated geometry (either per frame, per tick,…) but I am not seeing it in the API (also tried looking through the SkeletalMesh code to see where it specifies that the geometry is animated but no luck so far). I can guarantee that the topology remains the same, just wanted to update vertex positions.
Is there a flag, or other object that needs to be attached somewhere along UMeshComponent, UPrimitiveComponent, …, UObject?
-thanks
-s-