When creating a meeting (by drawing a line over the desired meeting time), the graphic user interface displays meetings as being 30 minutes or longer. If you edit the meeting, in the meeting slip, and specify the meeting is less than 30 minutes, when you close the meeting slip, the meeting time goes back to the minimum 30 minute meeting. This time limitation is in the OS, and there is no supported method of changing this restriction. A 30 minute meeting ensures that the vertical bar is of sufficient size, and leaves room for the meeting icon and the meeting title.