How this will help you
When this is selected, the discount will apply to all your listings, including listings the company admin creates later on. This means you won't have to come back to this page and add listings to a discount as you create them.
How to use it
Click Payments, then Discounts.
Click Add New Discount.
Complete all empty fields.
Select the checkbox next to All Listings (when you select this, the discount you created will be able to be applied to every listing. Do not select this if you want the discount code to only apply to specific listings).
Click Save.