How to let the vendor set up their own Terms and Conditions, Shipping and Refund Policies

Some customers may want to use the description field for Terms and Conditions. The description area is shown in each vendor product (in the single product page) in a WooCommerce Tab. If this can work for you, just change the tab name to "Terms and conditions", as shown here:

Enter the tab name In YITH Plugins > Multi Vendor > Frontpage:

This is how the Terms and Conditions will look like on the single product page:

As an alternative, you can use the shipping module. If vendors are enabled to set their shipping costs, they will see a box where they can add extra information like their Refund policy, Shipping policy etc, as shown here: 

To set up this information, let them do that from their vendor profile area: