You must grant privileges to users for them to do anything in Security Center, including logging on using Security Desk, and so on.
What you should know
Best Practice: Grant
individual users only the minimum privileges they need. To simplify privilege management,
Security Center provides templates with predefined privilege sets that you can apply to
users or groups.
Security Center also includes the Privilege troubleshooter, a tool that helps you investigate how privileges are assigned across your system. Use it to verify access rights and diagnose privilege‑related issues.
IMPORTANT: If a user’s privileges are
modified while they are signed in to an application, the changes take effect only after the
user signs out and then signs back in.