To assign the products

1. Go to the Admin panel.
2. On the left navigation bar, click the MARKETPLACE menu.
   The menu appears as shown in the following figure:
   
3. Click Manage Vendors.
   The Manage Vendors page appears as shown in the following figure:
   
4. Scroll down to the required vendor row.
5. Click the respective vendor row.
   The selected vendor page appears as shown in the following figure:
   
6. In the left navigation panel, click the Assign Products menu.
   The Assign Products page appears in the right panel as shown in the following figure:
   
7. Click the Assign Product button.
   The Assign Products page appears in the right panel as shown in the following figure:
   
8. Select the checkboxes of the required products, and then click the Assign Selected Product(s) to Vendor button.
   The selected products are assigned successfully and a success message appears as shown in the following figure: