You can select existing tags that are available in the NSX inventory or create new tags to add to an object.
The following procedure explains the steps for adding tags to a single object. For this procedure, the virtual machine object is considered. The steps for adding tags to other objects remain the same. You can navigate to the specific object page, and follow similar steps to add tags to that object.
For information about the maximum number of tags supported in NSX objects, see the VMware Configuration Maximums tool at https://configmax.vmware.com/home.