Help with Categories and Sub Categories

[Nobi]

Bubble Tutorial: Adding Categories & Subcategories to your app

Category y sub category y subsub category

[4] I am making an EBAY-type web application but I find myself stopping on the topic of product categorization. I want to categorize them 3 levels deep. can someone help me with an example. Create a menu and then a menu that depends on the previous selection is displayed and then another menu that depends on the previous selection is displayed.

Please refer to the above links. This might help you get the basics