I was advised that the best way to ensure an Open Floor Hearing is for someone to request one,
before doing so, I wonder if you could let me know a little more about how the hearing would be conducted.

This response was given over the phone.
Examining Authorities (ExA) will include a deadline in Examination timetables for interested parties to request to speak at any open floor hearing(s) (OFH). If at least one request is received on or before that deadline, an ExA must hold an OFH as part of its Examination. Although OFHs are held in public and anybody is able to attend; only interested parties may request to give oral representations. These should be based on 'relevant representations' or written representations already submitted. Any request to make oral representations from persons without interested party status would be at the discretion of the ExA.
ExAs must issue a notification no less than 21 days before an OFH is held confirming the date, time and place of the hearing. This notification is generally issued as soon as practicable after the close of the deadline for requests to speak. Applicants are also required to publicise hearings; which comprises publishing a notice in local press.
There is generally no agenda for OFHs. Interested parties who have requested to speak will be allocated a time slot to give oral evidence for a limited period. During this time, only the ExA will be able to ask questions to the person speaking. Oral representations should be based on previous written submissions, but should avoid repeating its content. The ExA will not wish to hear evidence already provided in writing.
ExAs may ask applicants to respond to any oral representations at the end of the hearing; or by written responses following the close of the hearing. Applicants, or other parties, will generally not be permitted to cross-examine speakers on their oral representations.
Please note that ExAs have the discretion to close hearings once all confirmed speakers present have given their oral representations. It is therefore recommended for attendees to arrive promptly and prepared for the start of the hearing.