How did one become a priest in the Roman Empire? I’ve read plenty of accounts of how elite members of society acquired religious roles within Rome, but not where the priests for more remote temples came from. For example, in Britain there was a Temple to Claudius in Colchester and a Temple to Sulis Miverva in Bath. Were priests in this temples appointed from local officials? If so, who appointed them? If not, where did they come from?

As a follow up question, do we know how much contact there was between temples? Were all temples to Jupiter in touch with each other? Was there any sort of centralisation, or was each temple pretty much it’s own thing?

Thanks in advance.