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Administration of Users, Groups, and
Roles 
As an administrator, you control who has access to applications by creating users and providing these users with a means of authenticating themselves to an application. To simplify user administration, users can be collected in groups according to criteria such as the users’ function in a company or the department they work in. Roles define the users’ authorizations and, in the case of portal roles, they additionally define the users’ navigation experience. Roles can be assigned to either users or groups.
For an overview of
the default users available after installation, see
Standard Users. An
emergency user is available for situations in which you have locked out all
administrators. For more information on using the emergency user, see Activating the
Emergency User. For an overview of the default groups available after
installation, see
Standard User
Groups. See also Default Groups.
In SAP NetWeaver Application Server for Java, the user administration console provides you with the functions to manage users, groups, and roles. This tool provides different functions, depending whether it is used by an end user, delegated user administrator or a global administrator.