1. On the Virtual Datacenters dashboard screen, click the card of the virtual data center you want to explore, and under Networking, select Security.
2. Select a security service, and click Configure services.
3. View the assigned tags from the Security Tags tab. 
   1. On the Security Tags tab, select the security tag for which you want to see assignments, and click the Edit icon.
   2. Under the Assign/Unassign VMs, you can see the list of virtual machines assigned to the security tag.
   3. Click Discard.
4. View the assigned tags from the Security Groups tab. 
   1. Click the Grouping Objects tab, and click Security Groups.
   2. Select a security group.
   3. From the list under Include Members, you can see the security tag assigned to a security group.