By you signing up with one or multiple others, your pair or group will be given a clan name.
The clan as a whole is to pay a collective monthly fee.
The more members in a clan, the higher the discount is, reducing each members monthly fees.

Your clan's monthly fees will only change according to the amount of members.
Attendance or class absence does not change your monthly fees.
Clan discounts are only available for Dragon Classes and Private Classes.