In the Vault Client, select Tools Administration Vault Settings.
In the Vault Settings dialog box, select the Behaviors tab.
In the Numbering section, click Define.
The Numbering Schemes dialog box lists the available numbering schemes. The default numbering scheme is indicated with a check mark. You can also create new schemes, edit existing schemes, and set the default scheme.
Select whether you want to view file or item numbering schemes, or both from the Filter drop-down list.