In 1C:Enterprise mode

Let us test the changes.

1. Run 1C:Enterprise in the debug mode.
2. In the Inventory section, open the Materials and services catalog, expand the Materials group, expand the Miscellaneous group, and double-click the Power supply cable item. 
3. In the item form, click Material options.
   This opens the list of material property sets, which is empty for now.
4. Click Create.
   Now we are happy with everything about the material options form.