Informal conferences may be called upon not less than 10 days'
notice to the parties, unless the parties agree to meet at an earlier
date. The notice may be given by telephone, but shall be confirmed by
use of a written notice on a form prescribed by the Director. The notice
shall indicate the date, time and place of the conference, and shall
also
specify the matters to be discussed. For good cause shown conferences
may be rescheduled. A copy of such notice shall be placed in the
administrative file.