In order to edit a price list you first need to find it.
How to find a price list
You can find it via the column "price list" on the "existing events" tab of your event:
Adminιstration > "edit" under the "plays" column> select the event you need from the table to the right > go to the "existing events" tab.
Then, select the pricelist you want in the "price list" column.
You can also find a pricelist by going to the editing pricelist section:
Adminιstration > "edit" under the "play options pricelists" column on the left-hand side of the screen > click on "all price lists" and select it from the list.
Alternatively, you can enter the name of the event in the search field and then click on the one you want:
Tip:
By clicking on the '' + '' icon of a price list, you can see the plays that you have used the specific price list.