admin requests were broadcasted to all admins before, also including admins that might be online but don't want/can take admin requests at the moment.
to route the calls a bit better the "duty" system was now added. admins write !onduty on IRC to signalize that they are ready to take calls or !offduty when they don't want any more calls. admins on duty will get the requests first, as a private message directly to them. if admins are on duty but don't answer a request within 20 seconds it is broadcasted as it was before.