Notice of Designation of Longer Period for Commission Action on Proceedings To Determine Whether To Approve or Disapprove a Proposed Rule Change, as Modified by Amendment No. 1, To Adopt New Rules 6.1P-O, 6.37AP-O, 6.40P-O, 6.41P-O, 6.62P-O, 6.64P-O, 6.76P-O, and 6.76AP-O and Amendments to Rules 1.1, 6.1-O, 6.1A-O, 6.37-O, 6.65A-O and 6.96-O