Select Numbering Schemes to set which naming schemes are valid for use in your copy design configuration. You can also set the default numbering scheme.
In the toolbar, click Options > Numbering Scheme > Configure
to open the Numbering Schemes dialog.

Select the Shown check box for any numbering scheme you want to display as a view button in the Numbering Schemes Panel.
Select the Default check box to set a Numbering Scheme as the default setting.
Click OK.