Scheduling flexibility gives you the control you need. You can control both registration windows (dates within which a test may be registered for) and testing windows (dates within which a test can be taken). Also, you can manage the availability of PCs at your testing centers, the opening hours of your centers and the availability of your sites and proctors.

For example, by controlling the availability of your sites and proctors, you can make testing available for only one day at an annual conference on a first come, first serve basis for 10 PCs that you have set up between the hours of 9:00 AM and 8:00 PM. Or, you can make your test available at 20 sites, between the hours of 8:00 AM and 5:00 PM, for the first week of the month every month.