Orbi RBS50 daisy chaining satellites from different sets

Thanks for the suggestion and my apologies for not getting back to you sooner.  We've had a lot going on around here and I just forgot.  But I did go into the system and try to add a satellite that way.  The alien satellite never showed up on the system and since it's not part of our original set of router and 2 satellites, the password is different.   

One thing I did do was to run a cable from the Frontier router and turn it on.  According to the colors as it was booting up, it synced.  When I logged into the Orbi system, it showed the alien satellite but it was off line and I couldn't get to it through the system.....  I keep reading about going into advanced settings and using the daisy chain setting but I can't find advanced settings on the phone app or my iMac computer.  I had hoped to be able to at least access the alien unit to change the password to match our current units.  Even if plugging it into our frontier router worked, I don't need it to be in the same room as the orbi router...which is also plugged into the Frontier router.  So still trying to figure it out.  Thank you for responding and again, sorry for the delay answering you.