In order to create a voucher category you must already have at least one voucher created.
Once your voucher(s) have been created, follow the following instructions:-
1. Go to Vouchers on the main menu.
2. Select Categories.
3. To add a new category click 'Add category'
4. Complete the details required under each of the three tabs:-
Details: The name of your voucher category
Gallery: Add a featured image for your category to appear on the front end of your website
Vouchers: Select all the vouchers you would like to appear under this category
5. Don't forget to save your changes!