Yes; That is correct. After you vote, you may change your vote by clicking "Change Vote" and then picking your selections again, then click "Cast Vote". Note it will not tell you what you picked before.
I'm new at this too! I've never done a poll before.
I actually cast a lot of votes. I think this is a great idea, and should cover all kinds of things including scheduled topics and open discussions.
Right now in today’s circumstances, I vote for weekly meetings. But once things settle back, down to a new normal, I think a monthly meeting would be great.