In the Quantification workbook, click an Item in the Navigation pane.
Open the Item Catalog
In the Item Catalog, click the Item Map Rules tab
Double-click a cell in the Takeoff Property column, and from the drop-down menu, select the Takeoff Property you want to modify.
In the Category column, double-click a cell, and from the drop-down menu, select the Category you want to associated with the Takeoff Property. Alternatively, type a Category name to jump directly to the required Category.
Note: The Categories listed here represent all the Categories associated with your file, not just those associate with the selected Item. Categories are displayed as tabs in the Properties window.
In the Property column, double-click a cell, and from the drop-down menu, select a Property. These properties are the model properties associated with the selected Category. They represent all the model properties for that Category that are contained in your entire file, not just the selected Item.
To delete a Category or Property, click a cell and press Delete.
Save your file. The newly-mapped properties are saved for that Item in your file.
Note: If you subsequently export your catalog, the mapped properties will not be carried over into the catalog.