//Creates a session with the top-most 6 available players, obvi 2 for each of the three roles.
private void newSesh_Click(object sender, RoutedEventArgs e)
{
Session sesh = medium.AssembleSession(queue);
SessionWindow seshWin = new SessionWindow(sesh);
// seshWin.Completed += updateData();
seshWin.Show();
allSessions.Add(sesh);
ongoingSessions.Add(sesh);
updateData();
}