The IP Office service user account used to login to web manager, determines what actions can be performed. By default the Administrator account has full access. However, that can be changed and other service users can be created with different levels of access.

Each service user is configured as a member of various Rights Groups. Those group define what the service user can do within web manager (and other interfaces that access the IP Office system). Configuration of service users and rights groups is done through the server's security configuration which is accessible as part of web manager (if your service user account is a member of a rights group with security configuration permission).