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

To use this discount rule, the discount requirement type should be configured as Must be assigned to customer gender and need to select the Required customer gender from the drop-down as displayed in the image below.

You can choose to set the discount for Female / Male / Other.

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

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