How do I attach a DHTMLXForm ??

Suite and Optimus Suite 5
#1

How do I attach a DHTMLXForm to a tabbar cell?
I see explicit attach methods for most other DHTMLX objects but not for DHTMLXform?

#2 
var myform=tabbar.cells("tab1").attachForm();
#3

Thank you so much. I was going down the road of adding forms via the layout object.