thanks for using our module.
I want seller to be also a manufacturer, how possibly could i do this ?
Manufacturer is a different concept in PrestaShop, it keep data in different tables.
Seller is a different concept, the seller account data is in following tables
ps_customer (seller account for front store login)
ps_employee(seller account for back office login)
ps_sellerinfo(seller account other data)
So there is not any linked between manufacturer.
If you want, you can create link by customization developer by your own.