"We have asked the lawyers of both players to fill the questionnaire within two days and submit it to us," committee chairman Fakhruddin G Ibrahim said, without elaborating on the document's contents.
A Pakistan Cricket Board tribunal banned Akhtar and Asif for two years and one year respectively in October after both players tested positive for the banned steroid Nandrolone.
The board withdrew the players a day before Pakistan was due to play its opening International Cricket Council's Champions Trophy match in India in October. Akhtar and Asif returned their positive samples during internal doping tests conducted by the board.
A three-member committee - comprised of Ibrahim, prominent lawyer and former Test cricketer Haseeb Ahsan and anti-doping expert Danish Zaheer, is hearing the players' appeals.
Ibrahim said he hoped that whatever verdict the committee gives, it will be treated as a final decision.
"In my opinion our decision will be final, but you can't say anything in law," Ibrahim said.
Renowned lawyer Mark Gay, who assisted the board during the International Cricket Council's code of conduct hearing following the Oval Test forfeit fiasco in August, has also traveled to Pakistan to help the committee.