private void timerSupervisor_Tick(object sender, EventArgs e)
        {
            this.Hide();
            frmSupervisor mainSupervisor = new frmSupervisor(txtUserName.Text);

            mainSupervisor.Show();
            timerSupervisor.Enabled = false;
        }
        private void btnTest_Click(object sender, EventArgs e)
        {
            frmSupervisor mainSupervisor = new frmSupervisor();

            mainSupervisor.Show();
        }