How to have a form presented to buyer prior their purchases

-- HikaShop version -- : 4.3.0
-- Joomla version -- : 3.9.18
-- PHP version -- : 7.2.28

I am trying to set up a service market place.Could u please tell me how to have a form that buyers must fill in before purchasing in order to assist the sellers.

Hello,

Maybe you can add some address custom fields to complete registration address form with your required information ?
Let's check this idea thanks to this tutorial about custom fields.
Other point to perform an efficient market place can be to use HikaMarket

Hope this will help you to progress on your subject.
Regards

Thank you very much for your advice I ll check that asap