You add administrators to manage different aspects of your deployment.
Add a user.
You can use the Security Console to add the user's record to the internal database and manage the user. For instructions, see Add a User with Options to the Internal Database. If you intend to store the user's record in an LDAP directory, you must use directory tools to add the user. You must associate the user with a security domain and an identity source.
Assign an administrative role to the user.
An administrative role is a collection of permissions that determine what level of control the administrator has over users, user groups, and so on. See Assign an Administrative Role.