how to create users in vcenter 6.7
You'll have to provide more details around your question other than this.
this is in Vcenter 6.7 when I select permissions I supposed to click on + sign and it opens option to start create users, but everything is gray.
That isn't to create users, it's to assign users permissions. If you want to assign users from an external identity source (like Active Directory), you must first add this into your SSO configuration.
Thank you!
