Hi,
There is no such capability.
Next version of HikaShop will have an improved checkout workflow system and it will be possible to add several terms and conditions views to the checkout with independant checkboxes and Joomla articles. So it will be closer to what you need. However, it will still require some coding to restrict each view to different categories.
I would recommend instead to not use the "terms and conditions" view and instead create custom fields of the table "order" via the menu Display>Custom fields.
You can restrict them to categories, you can have checkboxes, have them required, etc.
Note however that this is only available with the Business edition.