In the Specify Namespace in Internet Directory for Users and Groups window, you specified a namespace for the identity management realm. Within that realm, the default location of user and group entries are the subcontainers cn=users and cn=groups.
To use the default user and group locations, select Yes. For example, if the DN of the location of the identity management realm is "dc=us,dc=acme,dc=com", then the users will be located under "cn=users,dc=us,dc=acme,dc=com" and groups will be located under "cn=groups,dc=us,dc=acme,dc=com" respectively.
To customize the location of the users and groups:
Note that the DN can only contain the following LDAP attributes: l, dc, c, cn, o, ou, or st. For example, o=employees,c=us,dc=acme,dc=com is a valid DN.
When you choose Next, the Identity Management Realm Administrator Configuration window appears.