Please be more specific.
The Bishops not the Cardinals would convene an Imperfect Council to determine if the Pope has separated himself from the Church by the commission of obstinate heresy.
If it is determined that the Pope has separated himself from the Church the Imperfect Council would declare the Seat of Peter vacant and call for the election of a new pope.
But on more careful reading, it's bishops.
I thought bishops were under cardinals.
If the College of cardinals elects/selects the new pope, why aren't they the ones to dispose the old one?