As you can´t add the vCOps vApp to an Active Directory domain or LDAP system, you have two options: create local user and groups on the vCOps or import users from an LDAP.
Let´s go! Connect to the Custom UI portal (https://ip/vcops-custom) and click on the Security option on the ADMIN tab (top pane) as shown below:
After click o0n the "Import From LDAP" button, you must add the IP, the Base DN of your AD and an user and pass with enough rights to access.
Once you fill the blanks, click on Load LDAP Groups and add the groups on the down-right pane:
Click the in OK and return to the previous screen. Click "Lookup" and select the users/groups found:
Now you can view the user and add it to the specific Account Groups on the User Management:.
It´s time to test it! Go to the Custom UI portal or vSphere UI portal and try to access with the user name as it appears on the Account Groups (format: user@domain)
Voila!!!!