Creating A Free Product.

First, log in to Your Flexifunnels Account. 

Click on Product Settings from the dashboard

Click on the "Add New Product" button to add a new product.

Select the Category Of your product.

After doing "General Settings", Hover to Price settings to create a Free product.

Price Settings.

To set a Product Price as "Free" Click on the "Set Product Price" Button.
 

After Clicking on “Set Product Price” This screen will appear, The Price should be "Zero", In order to create a free product.

Click on the "Next" button, once you have done the settings.

PAYMENT OPTIONS 

You don't need to add any Payment provider for the Free Product.

Know-How to create a Product in FlexiFunnels In - Detail-

 https://help.flexifunnels.com/support/solutions/articles/36000308265-creating-product-in-flexifunnels-to-sell-