You may request Review or Approval for any deal. Here's how you send it to your Broker for review prior to closing a deal if you wish to use that workflow.
Go to the specific deal and click the Created dropdown button on the righthand side. Then click, Request Review. There you can also add a comment and hit Submit. The Admin for the deal has the permission to request review / approval. (Admin for the deal can be changed in the People for the deal.)
Brokerage Name → Deals → Deal # → Created → Request Review → Comment (if desired) → Submit
Link to the list of deals that need review or approval from your Dashboard: