processmaker-files/workflow/engine/xmlform/authSources/authSources_SearchUsersMenu.xml

<?xml version="1.0" encoding="UTF-8"?>
<dynaForm type="xmlmenu">
  <SelectAll type="link" value="[SELECT-ALL]" link="#" onclick="selectAll(); return false;" colAlign="left" colWidth="100">
    <en><![CDATA[]]></en>
  </SelectAll>
  <PAGE type="hidden" value="1"/>
  <PAGED_TABLE_ID type="private"/>
  <js type="javascript" replaceTags="1"><![CDATA[

function selectAll(){
  var oAux;
  var i = 0;
  var input_obj = document.getElementsByTagName("input");
  if (document.getElementById("form[SelectAll]").innerHTML == '[SELECT-ALL]') {
    document.getElementById("form[SelectAll]").innerHTML = '[DESELECT-ALL]';
    for (i = 0; i < input_obj.length; i++) {
      if (input_obj.item(i).type == 'checkbox')
      {
        input_obj.item(i).checked = true;
      }
    }
  }
  else
  {
    document.getElementById("form[SelectAll]").innerHTML = '[SELECT-ALL]';
    for (i = 0; i < input_obj.length; i++) {
      if (input_obj.item(i).type == 'checkbox')
      {
        input_obj.item(i).checked = false;
      }
    }
  }
}
]]></js>
</dynaForm>