All actions required pursuant to these rules shall be completed within the times specified, unless extended by the hearing officer upon a showing of good cause. Requests for extensions of time for the filing of any pleading, letter, document, or other writing or completing any other required action must be received in advance of the date on which the filing or action is due and should contain sufficient facts to establish a reasonable basis for the relief requested.
22 Miss. Code. R. 20-04-100