From the left navigation menu, click Classes & Lessons > Lessons Admin.
On the Sys > System tab, on the bottom right click Edit.
Next to Multi Student Discount (per Reg), select YES.
Next to the Chart of Account, click Pick.
Find the Chart of Account, and click Select.
Click Add and enter the From and To (2 to 3 means that if you have 2 or 3 students in the same registration they will get a total of $10 off as seen below)
Click Save Changes.
Assign the Discount to a Sub Program
Go to the Subprogram Tab
Put a checkmark next to the subprogram(s) that will have these charges applied.
Click the Discount Multi-Setup button.
Click the "Multi-Students Discount" drop-down and select YES-Participates.
Click Save Changes.
Note that the discount comes off of the Class Fee and NOT the Registration Fee Per Class. If the class fee is set to charge monthly the discount will apply to that as well.