Collect the Case IDs
Approving a whole batch of checks, flagging every case from one site, closing out a season - Review Submissions applies a status, comment and reason to many cases from one spreadsheet. Each row is recorded on the case exactly like a review saved by hand. New to reviewing? See Review a case.
You will need the Case ID of each case to review - from the case page header, a site's CASES list, or a Data View of the form. A Data View is the quickest way to get a list: filter the cases you want, export, and copy the Case ID column into the review template.