This discount requirement can be used with any other discount type.

To use this discount rule, the discount requirement type should be configured as On X Customer Order and need to provide value for Apply discount on Order X as displayed in the image below.

discrule-onxorder-Disc-req

Once saved, the discount requirement will be added to the discount as displayed in the image below.

discrule-onxorder-Saved-req

That's all you need to do in order to use this discount requirement in your nopCommerce store.