Multiple small MPPTs vs one large MPPT — wiring & sizing

I guess the Solar Controllers won’t show up in the VRM Portal or in the Cerbo GUI until they are connected with VeDirect cables?

I did get all three controllers updated and synced to their own Bluetooth network using the shunt as the master so they do have synchronized charging and are getting temperature and voltage from the shunt. So this is really good.

Question, with 3 solar controllers configured this way, should I set the max charge voltage to 60/3 or 20A each so that the batts are not overcharged until my cables/hub come in?