RBS20 is it possible to add additional (or at least one) satellite to the Router-2 Satellite unit?

[T-E-R]

Is it possible to add at least one more satellite unit on to the router-2 satellite parent unit?

[CrimpOn]

People have reported having 5 or 6 satellites on a single Orbi router.  So, "yes".  Apparently there is a "trick" starting at satellite #4, but the first three are just, "Add".  ANY model of satellite will work. (From the Orbi residential line, not the "Pro" or "AX" products)