Meetings of the Project Liaison Group should normally involve the attendance (in person or by alternative) of representatives at the meeting.  Where the representatives of the Project Liaison Group consider it appropriate (by affirmative vote of all those voting on the matter which must include not less than one representative of the Authority and one representative of the Contractor) meetings may also be held by telephone or another form of telecommunication by which each participant can hear and speak to all other participants at the same time.