Subledger Accounting - no accounting needed

On the accounting events inquiry screen in de drop down list I see the event status 'no accounting needed'.

How do I setup (in financial services accounting hub) a eventtype, Journal Line Definition etc in order to create events for the transactions from that source, but let create accounting decide that no accounting is needed?

I have tried unchecking the accounting checkbox both on the setup of eventmodel and
for the eventclass/type combination within the application accounting
definition. This still leads to events with the status unprocessed.
This means that when I check the accounting checkbox at a later stage and run the create accounting program