What action is required to enable forwarder management in Splunk Web?

[Reference:https://docs.splunk.com/Documentation/Splunk/8.2.1/Updating/Forwardermanagementoverview, , https://docs.splunk.com/Documentation/MSApp/2.0.3/MSInfra/Setupadeploymentserver, "To activate deployment server, you must place at least one app into %SPLUNK_HOME%\etc\deployment-apps on the host you want to act as deployment server. In this case, the app is the "send to indexer" app you created earlier, and the host is the indexer you set up initially., , , ]