Generally:
Administrators create the named conditions for an organization, which are then used by content designers (providing they have the appropriate permissions to the conditions or the folders in which the conditions are saved) as they create dashboards and agents.
The ability to create or edit named conditions is controlled by the Create Conditions privilege, which is managed by the administrator.
Content designers create inline conditions.
For information about privileges, see "Managing Presentation Services Privileges" in Security Guide for Oracle Business Intelligence Enterprise Edition.
For information about permissions, see Chapter 13, "Managing Objects in the Oracle BI Presentation Catalog."