A motion to convene a closed meeting must identify the subject of the meeting, the purpose of the meeting, and the exemption(s) which allow the meeting to be closed. A motion that fails to identify the subject, or lacks any other element, is insufficient. There is no general exemption for public bodies to discuss police investigations in closed meetings. Votes are required to be taken at open meetings; decisions made in closed meetings are not effective until a vote is taken at an open meeting.