Can the host lower the raised hands all at once?

Can the host lower the raised hands all at once?

Hello,

My organization(Tranganization) has been using Zoho webinar extensively. We have a paid account at your portal. 

But, we are facing a problem here. We conduct webinars with like 100 participants. questions are asked by host, where participants answer by raising their hands. Now as a host, how can i lower the raised hands of the participants all at once.