In the Sheet Set Manager, Sheet Views
tab, click the View by Category button.
Right-click the sheet set node (at the
top of the list). Click New View Category.
In the View Category dialog box, under
Category Name, enter the name of the new view category.
If a list of blocks is displayed, select
the callout blocks to be used for the views in this view category.
You can add blocks to the list by clicking the Add Blocks button.