Every effort shall be made by Court and counsel to promote efficiency, to maintain decorum and to avoid inconvenience to the jury panel. All counsel, defendants, and witnesses shall be present at 9:30 a.m. on the date of trial. Counsel, defendants, and witnesses for cases which are not anticipated to be heard first shall nevertheless report and remain available for trial throughout the day. For all cases which are tried to a jury, on the date of trial, counsel for the commonwealth and the defendant shall prepare and tender to the court proposed jury instructions.