About the Governance Role: SPOs category

The Stake pool operators (SPOs) is one of three distinct groups responsible for ratifying the governance actions using their votes.

Mr. Kammerer,

Has anything been released as to what will be required of SPOs in order to pass a governance action that does not meet the AVST threshold?
-Will it be simple plurality or will it also have a defined threshold similar to the AVST?
-How will the SPO vote be weighted? 1 pool / 1 vote or weighted by stake?