Restricting Administrator Privileges in PHPNuxBill

[peterfada]

I am setting up PHPNuxBill and noticed that the Administrator role appears to have access to almost all system modules, including sensitive sections such as:

• Network
• Settings
• Backup/Restore
• Payment Gateway
• Plugin Manager
• Administrator Users

For better operational security, it would be helpful if administrators could manage customers, plans, and reports, but not access system-level configuration that should only be available to super-Admin.

Is there a way to disable certain menus or restrict module access for the Administrator role without modifying core files?

Thank you.