Below are the steps to perform to point your on-prem VDA to WEM on citrix cloud:

• Login to citrix cloud portal and setup resource location.
• Download cloud connector software to a windows server machine, and install it.
• Connect to your cloud account after cloud connector software is installed.
• Now copy the WEM admx and adml files on a win 10 machine, to c:\windows\policydefinitions or copy them to your AD server and configure a GPO to point to your wem agent on win10 to cloud connectors.
• Install WEM software in your win 10 VDA machine.
• Logon to your citrix cloud portal for WEM and add the computer account or setup auto discover computer agents by adding an OU.
• Configure settings and hit apply.
• Logon to win10 VDA and refresh agent. This will pull latest policies and settings.