In the pdf they emailed you there is a “request a new appointment” button , they need you name , email address, your paper number ( top if the email they sent you) , and ask the reason ( im away because of a family medical situation) and ask you to choose 3 dates between september and november ( it is all explained in the email) , they review the dates , select one and send you another email.Finally My wife also got test invite for 6th September. From Vancouver and was in process since 13th Feb. Now she is also out of canada. if we want to change the test date what is the procedure and how much will our process be delayed for getting next test date. Is it advisable to change the date. Can we choose any dates our choice in September or October. Can anybody guide us what to do.