Hi,
There is no option to set this up.
The solution will be to :
- create a module instance of the type "HikaShop content module" via the joomla modules manager and configure it to display a listing of all the categories.
- develop a small plugin implementing the onBeforeCategoryListingLoad event:
www.hikashop.com/support/documentation/6...eCategoryListingLoad
In it, you can add a condition on that custom field to filter out the categories with no selected in that custom field.
This requires some basic PHP and MySQL skills.