In the Projects window, right-click the Configuration node in the project you want to modify, and then click Edit.
The Configuration Editor appears.
Select the parent object, click Templates in the toolbar, and then select the template you want to use.
The new child object and any defined fields appear in the object tree.
To change the name of the new object, double-click the object name, type the new name, and then press Enter.
Do any of the following:
Add fields to the new object, as described in Adding a Field to the Master Index Object Structure.
Delete fields from the new objects, as described in Deleting a Field from the Master Index Object Structure.
Modify the properties of the fields in the object, as described in Modifying Master Field Properties.
On the Configuration Editor toolbar, click Save.