Surely, every event has to be known to others. Only then people can participate there. So this creates an awareness of all the events happening.
Once after the event is known, the particular student can also register into an event just by signing up. All the details about the event can be known.
Every time you register, you can share your coupon code with your friends and they can use the coupon code, to reduce the fee to be paid for the event.
A picture is worth a thousand words