I would like to be able to choose how many reviewers I get for each draft. How can I do that?
Yes, you have to resubmit your essay to get another review.
How it works is that one person chooses to review your essay that you submit to a giant pile of essays that need to be reviewed. After your essay is reviewed, it's taken out of that pile so no one else will be able to review it unless you resubmit.
To keep this community safe and supportive:
21 is correct but keep in mind it can cost karma as it’s a dynamic cost depending on volume of essays submitted time of day etc