If you cannot attend your hearing, then you should at the earliest opportunity let the FtP administrator know. You can find the details of the administrator on the invitation letter that you would have received.
Hearings are only ever rescheduled for a good reason, for example; health reasons or medical appointments that cannot be rescheduled.
It would also be beneficial if you could provide some evidence as to why you are not able to attend and need to reschedule. The committee would expect students to prioritise the hearing where possible.
If the Faculty has not given permission to reschedule the hearing, then it will go ahead as scheduled in your absence. You will receive your outcome via letter through email, within 7 days of the hearing date.