You can reschedule your test appointment on the ProctorU platform.
To do this simply click on the ProctorU button on your dashboard.
Click the 'Schedule Exam' button and choose your desired date and time. You are required to schedule your exam at least 72 hours in advance. If you want to schedule your appointment on short notice, an extra fee applies.
You are allowed to cancel or reschedule your exam. You can find more information on scheduling, rescheduling, and canceling your exam here.