Hello.
"Vendor Front End" is established
As in the list of products to the address:
/components/com_jshopping/templates/addons/addon_vendor/product_list.php
to show ID and e-mail of the seller.
Joomla: Joomla! 3.6.5 Stable
JoomShopping: 4.15.1
PHP: 7.0.16
JoomShopping: 4.15.1
PHP: 7.0.16