You can duplicate a name used within another category. Go to: Model tab>Add Category
Categories are hierarchical structures to help you organize your models within the context of your catalog. For example, you can create a category for actuators, another category for cylinders, and so on. You can create new categories at the root level (nested below the Catalog name), or you can add new categories, nesting them under existing categories.
To add a new category:
On the left panel, select the category under which you want to add the new category.
If you do not select a category, the new category is created at the root level.
On the right panel, click Add Category.
In the Add Category to (name of catalog or existing category) dialog box, type a value for Category Name.
You can duplicate a name used within another category.
Type a value for Title (optional).
Type a value for Description (optional).
Select High for 3D View Quality to display models in enhanced 3D view.
Click Browse to search for an image to represent the new category.
The
optimal size for images is 150 by 150 pixels. Larger images are resized
by 3D PartStream.NET, but resized images may not appear proportional.
The image, along with a list of items that belong to the category, is displayed on the right panel whenever the category is selected.