Just checking: you want the link to the Zabbix web gui to only show up for admin users?
Because Zabbix has it's own authentication mechanism, you could do this:
```
"allUsers": true,
"grantPrivilege": "local"
```
This allows an admin to grant permissions (to see the link) via either Control Panel>Privileges to specific users, or during user creation. I agree it makes sense for Zabbix Controls.