Adding layout to a tab window

I am trying to figure out the best way to create a form, and I think I need to add a layout to the tab window, therefore dividing the box in half. But I am having issues attaching the 2E layout to the area.

var myForm, formData, formData2;
var dhxTabbar;

	function doOnLoad() {
		formData = [
			{type: "settings", position: "label-left", labelWidth: 145, inputWidth: 150},
			{type: "block", inputWidth: "auto", list:[
				{type: "settings", position: "label-left"},
				{type: "file"},
				{type: "input", label: "Name", value: "file_name"},
				{type: "input", label: "Description", rows:5, style:"width=100px; height=100px"},
				{type: "checkbox", position:"label-right", label:"Show in email?"},
				{type: "checkbox", position:"label-right", label:"Show in web?"},
				{type: "button", name:"attach", value: "Attach File"},
				{type: "newcolumn"},
				{type: "select", label:"Category:", options:[
				{text:"Property Information Report", value:"propertyinfo"},
				{text:"Home Inspection Report", value:"homeinspection"},
				{text:"Other Report", value:"otherreport1"},
				{text:"Other Report", value:"otherreport2"},
				{text:"Other Report", value:"otherreport3"},
				]},
				{type:"input", label:"Note", rows:3, style:"width=100px; height:100px"}
				
			]},
			{type: "block", inputWidth: "auto", id: "tab2", list:[
				{type: "input", offsetTop: 14, label: "Report Email Message", value: "",
				rows:3, style:"width:300px"},
				{type:"checkbox", position:"label-right", value:"defaultmsg", label:"Set as default message"},
				{type:"label", label:"Email Details"}, //this is what needs to go in the bottom part of the layout
				{type:"select", options:[
				{text:"Client", value:"client"},
				{text:"Selling Agent", value:"selling_agent"},
				{text:"Listing Agent", value:"listing_agent"},
				{text:"Escrow Agent", value:"escrow_agent"},
				{text:"Email", value:"email"},
				{text:"Fax", value:"fax"}
				]},
				{type:"newcolumn", offsetTop:400},
				{type:"label", label: "Email List"},
				{type:"input", vale: "Show email of selection/enter email"},
				{type:"newcolumn", offsetTop:100},
				{type:"select", options: [
				{text: "Attachment", value: "Attachment"},
				{text: "Link", value: "link"},
				{text:"Both", value: "both"}]},
				{type:"newcolumn", offsetTop:25},
				{type: "button", name:"add", value: "Add"} 
				
			]}
			
		];
		
		dhxTabbar = new dhtmlXTabBar({
			parent: "tabbarObj",
			tabs: [
				{id: "a1", text: "Attach Documents", width:400, active: true},
				{id: "a2", text: "Upload Documents", width:400}
				
			]
		});
		
		myForm = dhxTabbar.cells("a1").attachForm(formData);
		dhxTabbar.tabs("a2").attachObject("tab2");
		dhxComponent.cells("a2").attachLayout("2E");
		
		
		
	}

Hello
Could you please draw a scheme how do you see that? Your code sample is a little unclear (doesn’t explain what you need)