In your Folks ATS, follow those steps in order to create or modify existing categories :
1. Go to the "Admin > Parameters > Category List" tab.
2. Insert the category in the "English" and/or "French" field.
The "English" and "French" lists are independent. It is possible to add an item in one of the two lists by leaving the box of the second language empty. It is also possible to add two different items in both languages at the same time. For example, "Parlez anglais" in French and "Speak french" in English.
3. Click on "Add".