Selma Payne's POV:
The so-called Council of Elders, as the name suggested, was a process where the entire Council of Elders voted for a resolution.
Generally speaking, the ministers of the imperial court were composed of two groups: The first group was made up of simple ministers. They might be born as civilians, nobles, or soldiers, but they had no additional political status other than official positions. Members of the Council of Elders held the other part. In addition to their various official positions, they also had the identity of an elder.
Most of the Council of Elders members did not have any official positions. They might have worked in a certain government department or shouldered a certain burden, but time had forced them to retire from their previous positions.