Meeting m3 = new Meeting("Meeting3", "Topic3");
Meeting m4 = new Meeting("Meeting4", "Topic4");
Meeting m5 = new Meeting("Meeting5", "Topic5");
// Add four meetings to the group
grp.addMeeting(m1);
grp.addMeeting(m2);
grp.addMeeting(m3);
grp.addMeeting(m4);
//make the group persistent