In ZENworks Control Center, click.
In the Licenses panel, click.
Select, 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.