private void btn_Back_Click(object sender, EventArgs e)
        {
            FrmUserManagement frm = new FrmUserManagement();

            this.Hide();
            frm.Show();
        }
        private void BtnNewUserCreation_Click(object sender, EventArgs e)
        {
            FrmUserManagement f = new FrmUserManagement();

            f.MdiParent         = this;
            PanelMENU.Visible   = false;
            PicBus.Visible      = false;
            picCllgeBus.Visible = false;
            f.Show();
        }