You can change the value of a price for an event via its pricelist settings.
You can find the price list from the "price list" column in the Tab "events" of your production (see instructions here).
You can change the value of a price zone or the value of a discount.
The value changes by clicking on the pencil icon in the relevant field.
You can change the value of a pricelist zone in the table "pricelist zones"
You can change the value of a discount in the table "discounts of selected zone" (click on "in detail" in the column "discounts" of a zone).
If you change the value of a zone, the final price for the discounts of this zone will also change.
Click on "in detail" and check the value of the discounts' zone again.
In order to calculate the value of a discount, you subtract the final price of the discount from the value of the zone:
Discount's value = Zone's value - Final discount's price
In the example above:
the default has 10 € (= 10-0)
the student has 8 € (= 10-2)
If you change the value of a discount, the other prices of the price list will not be affected.