Every administrator and manager at your school gets the weekly summary, on Monday morning when there's something to report: who has finished, who is overdue and who hasn't joined yet. At a trust, the trust's administrators get one email with a line for each school.
To add someone, go to Manage, then Settings, and give them a role under "Who can manage". They'll get the next one.
Anyone who doesn't want it can switch it off in Account, under "What we send you".