How do I create categories – Grocery Shopping List FREE - Buying List & Checklist for Supermarket Review

This app would be exactly what I want if I could create my own categories. It says on the description of the app that this was able to be done in this app, but I have yet to figure out how. I’ve messaged app support and no reply. If someone can tell me how to create my own categories I will be happy to give a better review. Hope someone can help me because everything else in this app is exactly what I’m looking for, simple and easy to use.
Review by BaldJoe00 on Grocery Shopping List FREE - Buying List & Checklist for Supermarket.