Apple released schedule for sessions and office hours up to December 17. Apple Tech Talks 2021 are soon to finish. Take your chances to schedule your office hours or register for the session you missed previously.
Apple Tech Talks 2021: Events Schedule
Apple Developer: Tech Talks: final set of sessions and office hours now available
Developer:Register for the sessions, schedule office hours as needed.
QA engineer:Business as usual.
PM/DM:Business as usual.