private void internB_Click(object sender, EventArgs e)
        {
            multiPurposeLoginForm mPLF = new multiPurposeLoginForm("internLogin");

            mPLF.Show();
        }
        private void pharmacistB_Click(object sender, EventArgs e)
        {
            multiPurposeLoginForm mPLF = new multiPurposeLoginForm("pharmacistLogin");

            mPLF.Show();
        }
        private void doctorB_Click(object sender, EventArgs e)
        {
            multiPurposeLoginForm mPLF = new multiPurposeLoginForm("doctorLogin");

            mPLF.Show();
        }