To access this feature, you first upload the app to the Apps for SharePoint library in the App Catalog. Then, add the app to the App Catalog site itself. After the app has been added to the App Catalog site, you can find it under Site Contents. Clicking the ellipses (...) in the upper-right corner of the app generates a pop-up dialog box that shows the app details. Click the DEPLOYMENT link to go to the Manage App Deployments page. This is the where you can manage the rules for App Deployment operations.