(A) Arraignment shall be held in open court at such times designated by the court administrator in the annual case tracking schedule.(B) Waiver of Appearance at Arraignment (1) A defendant who has counsel of record may, prior to arraignment, waive the arraignment by filing a waiver of arraignment in the clerk of courts office in the form prescribed by the court administrator. A copy of the waiver shall be served upon the district attorney pursuant to Pa.R.Crim.P. 576.(2) If a written waiver of arraignment is filed prior to the scheduled date of arraignment, the scheduled date of arraignment shall be deemed the day of arraignment for the purpose of computing time limitations for filing all pretrial motion and requests pursuant to Pa.R.Crim.P. 572, 573, 578 and 579 and for the purpose of scheduling further dates pursuant to these rules.