Rule triggered by to-dos/approvals

My team would use this functionality so that reviewers (who don't do that much work in Aha and aren't that used to the tool) can go in and either complete a to do or accept/reject an approval and by doing that trigger a rule, so that the status can update or a field be updated.

This basically becomes a way that allows reviewers to update records, but only selected fields and in predefined ways.