In ZENworks Control Center, click Configuration.
In the Licenses panel, click ZENworks 2020 Patch Management.
Select Activate Product, then fill in the fields:
Product Subscription Serial Number: The serial number provided to you when you purchased the subscription license. If you have not purchased a subscription license, you can enter the trial evaluation code. After the 60-day evaluation period, Patch Management requires a subscription license to continue receiving patches from the subscription service. To purchase a subscription license, see the ZENworks Patch Management product site.
Click Apply.