"No Results" in the Main Category Link
I created main Categories and sub-categories. The categories which have no sub-categories displays products correctly. However, when I select a Main Category which has sub-categories the page delivers the message "no results for your search". I understand this happens because I have not entered any products under the Main Categories.
My question: Is there a way to have the Main Category (with sub-categories) re-direct to an HTML page with content and other links? OR, can I assign products to multiple categories?