You can change a reference request in your application anytime before you have submitted the application.
If you have already submitted your application please see this page at Submittable's help desk.
To change your reference, you'll need your submission to be opened to editing by BANF. To request that it be opened to editing, select your submission from the main list view in Submittable, and then choose Edit in the top right corner. You can then include a note explaining why you need to edit the submission - in this case, to change a reference.
BANF will not be able to accommodate requests to edit after FRIDAY February 17, 12 p.m.