[bardd]

With us, all leaders are seniors (unless no senior is qualified for a certain role).
As soon as our last event is over, the juniors start talking among themselves to decide on who will do what and what they want the team to look like. They talk to the gratuating seniors and to alumni and hear whatever suggestions they have, and what they think was good\bad with the team in the passing season in particular and in all seasons generally. Only the juniors (soon to be seniors) have a deciding vote on who does what, and they have their discussions behind close doors.
A month or too after they start discussing, the team has a concluding meeting, with all the team members and mentors and sponsors (basically, anyone assosiated with the team and wants to come). In that meeting we discuss the passing season, what went right or wrong, and the meeting is concluded with introducing the new management (all leadership roles and who takes what role).
Officialy, the juniors start their term at that moment, but in the time between the last event and the announcement they practically share power with the seniors.