Lawyers for both men said they would plead not guilty when a formal arraignment is scheduled.
The next court date was the formal arraignment on June 14, and following that a preliminary hearing set for August 15.
If the schedule announced by Dr. Allawi on Tuesday holds up, the first formal arraignments will begin next week.
Mr. Martinez waived formal arraignment this morning and pleaded not guilty to each of the two counts against him.
He pleaded not guilty to the other charges lodged against him by other youths at a formal arraignment held on November 7, 1968.
A formal arraignment will be scheduled later.
On October 8, Henley and Brooks were brought to court to face a formal arraignment.
His formal arraignment was delayed while he recovered from deep facial cuts.
The formal arraignment, scheduled for Wednesday, will conclude three days of hearings.
He was ordered held without bail until his formal arraignment on Jan. 2.