Default delivery addresses are entered in the Account on the Added Fields tab. Whenever an event is created, this delivery address will be suggested for the event.
- Open the organiser's
Account. - Go to the
Added fields tab in the side navigation. - Go to the Deliver to field and enter the name of the delivery address, select the right account from the list of results and
Confirm.
Alternatively, enter a new account. 
Save your input by clicking on the icon in the top left-hand corner of the input window.