templates/subSilver/login_body.tpl
 NOTE --- Remember to do this for all your installed styles!
  • FIND:

    		  <tr align="center"> 
    			<td colspan="2"><span class="gen">{L_AUTO_LOGIN}: <input type="checkbox" name="autologin" /></span></td>
    		  </tr>
    
  • BEFORE, ADD:

    		  <!-- BEGIN switch_allow_autologin -->
    
  • AFTER, ADD:

    		  <!-- END switch_allow_autologin -->