If you're looking to uninstall the Fellow Zoom app then the instructions below should help.
Steps
Log in to your Zoom Account and navigate to the Zoom App Marketplace.
Click Manage > Added Apps, or search for the Fellow app.
Click the Remove button on the right side of the row with the Fellow app. The Zoom App will be removed from your Zoom client, and your Fellow account will no longer be associated with your Zoom account.