To Create Custom Properties for Sheet Sets and Sheets
Click View tab Palettes panel Sheet Set Manager.Find
In the Sheet Set Manager, open a sheet set.
On the Sheet List tab, right-click the sheet set node. Click Properties.
In the Sheet Set Properties dialog box, click the Edit Custom Properties button.
Click Add to create a new custom property for the sheet set. Click the name and the default value to enter the information for these fields. Under Owner, select Sheet Set or Sheet:
Sheet set properties are typically specific to a project, for example, the contract number.
Sheet properties are typically specific to each sheet, for example, the name of the designer.
To remove a custom property, select it and click Delete.