You can find the schedule of your CEnT on the Payment and Enrolment Receipt.

You must access the test (and the WEBEX virtual room) only between 2:30 PM and 2:50 PM, time window in which the CONFIRM button will be available.

Before 2:30 PM, the CONFIRM button will not be available. After 2:50 PM, you can no longer access and take the test.

You can’t choose your test entry time and your assigned one can’t be modified.