[arch-mirrors] Mirror hosting - downtime and feature question

Hi - I’ve 2 questions on mirror hosting (am up and running now as a tier 2). If someone could answer or point me to it, that would be great. Thank you. 1) If i need to take the site down for maintenance, is there a best practice for notification / monitoring of the systems that manage / test the mirrors? Talking routine, 1-4 hour maintenance type event. 2) When I want to add an additional service such as https, rsync - who do I let know so the mirrors can be updated? Thank you! Chad