Collaborate Ultra - lower hands for all attendees

Please bring back the lower hands for all attendees in Collaborate Ultra. We have instructors who teach 20-50 students online and they do not hold formal polls, but they do ask their students to raise hands several times during an online session to gauge compression. It is impractical to expect that many students to lower their own hands or the instructor to lower the hands of each student due to size and pacing of the class.