Payments are defined at the event level and different events can have different payment details. It would be extremely difficult to manage multiple payments to multiple accounts.
In the instance of carnivals (Easter, Aus Champs) it would be recommended to have a single payment account even if multiple clubs are organising separate days. This is what has occured for Easter 2013.
If you are refering to issues within a single carnival (such as Easter) then it really comes down tot he process of making the entry. We will be adding some more help options in the near future to guide people through the process of making multiple entries to an event.