Newbie here. Ive got 3 Asus AX6600 routers in a mesh setup driven by Starlink Internet. I'm adding a VPN. Question is which of the routers does the VPN get installed on? Is it the "master" or the first one in the sequence? How do I tell as the dashboard does not identify where the VPN is? And should I care? I think I do as 2 are wired and the third is wireless.