Multiple People Speaking at Once

Hello - I work for an administrative board that takes a lot of votes and we are no longer allowed to use the voice vote style (all those in favor say "aye," all those opposed say "nay") because we were told that Zoom only recognizes one voice at a time. This has truly added about 45 minutes to our meeting because we have to use a roll call vote on every item. Is it true that Zoom only allows sound from one participant at a time? This just seems like inaccurate information. I would test it with a group of co-workers, but I'm certain my leaders would prefer something in print.

Thank you. 

gretchen