In Registration Setup / Discount Times tickets with special conditions, the so-called "Early bird fees" are created. Those tickets are available in advance bookings for certain periods at a cheaper price than the "normal" price. The "normal" price is actually seen as the "on site" price.
Attention: Please note that the price of the tickets for the discount times must always be cheaper than the normal price!
After applying the discount price in Registration / Ticket Setup / Ticket Setup (see yellow marking) discounts are displayed here: