For the basics course you can switch to another course day if you give us a minimum of 7 days notice before the course starts and the course you request to switch to has open spots.  To do this send us an email with your name and the course you are signed up for, along with the one you would like to switch to.
For our other workshops, they are not hosted very often so it's best to ask for a refund with a minimum of 7 days notice if you can't make the course.