i have installed a plugging purpletreesoft multivendor marketplace There is no option to select sub-categories when we upload product as seller.

Envato Customers Web and Code
1

There is no option to select sub-categories when we upload product as seller in Purple tree soft multi vendor pluggin

2

Categories and subcategories are treated equally by opencart, hence by our extension. You can allow any category or subcategory for seller to use, from admin options. More details and user guide can be accessed from https://www.opencart.com/index.php?route=marketplace/extension/info&extension_id=31461 and https://www.purpletreesoftware.com/multivendor-marketplace-opencart.html

Regards,
Purpletree Software LLP