there could be several qualified teams to approve MR;
by default if there is only one team then MR will require at least 2 π and if there are multiple teams then at least 1 π per team (number of votes per team is customizable at the project level in config).
Old branches
Once a week bot checks its repositories for stale not protected branches that had no changes:
wipe merged branches;
1 week or more - notify the author of the last commit;