The Super administrators and Administrators of Zoho Mail have access to the Control Panel of Zoho Mail, to manage the organization and the users. After signing in to Zoho Mail as Administrator or the Super Administrator, you can launch the Control Panel from the link in the Zoho Mail window. 

The Superadmins/ Admins can also directly sign in to https://mailadmin.zoho.com to directly access the Control Panel. 

Control Panel Link - https://mailadmin.zoho.com