two Subviews (not nested) in data tables

I have a json data which i am trying to present in UI. I can only add one object to the subview. In below sample.
I have a ChangeObject(objid,name)–>coverpage/affectedItems
I am able to display the Change and coverpage, how should i show the affected items of coverage?

[
  {
    "objectID": "6018532",
    "name": "C00001",
    "coverPage": {
      "Number": "C00001",
      "Status": "Released",
      "Change Type": "ECO",
      "Date Originated": "Sat Aug 22 14:56:21 PDT 2020"
    },
    "affectedItems": [
      {
        "aiAttributes": {
          "Item Number": "D00001",
          "Item Description": "Description of D00001"
        }
      },
      {
        "aiAttributes": {
          "Item Number": "P00001",
          "Item Description": "Part1 desc"
        }
      },
      {
        "aiAttributes": {
          "Item Number": "P00002",
          "Item Description": "Second Part"
         }
      }
    ]
  },
  {
    "objectID": "6018565",
    "name": "C00002",
    "coverPage": {
      "Number": "C00002",
      "Status": "Released",
      "Change Type": "ECO",
      "Date Originated": "Sat Aug 22 15:09:14 PDT 2020"
    },
    "affectedItems": [
      {
        "aiAttributes": {
          "Item Number": "D00001",
          "Item Description": ""
        }
      },
      {
        "aiAttributes": {
          "Item Number": "D00002",
          "Item Description": ""
        }
      },
      {
        "aiAttributes": {
          "Item Number": "P00001",
          "Item Description": ""
        }
      },
      {
        "aiAttributes": {
          "Item Number": "P00002",
          "Item Description": ""
        }
      }
    ]
  },
  {
    "objectID": "6020083",
    "name": "C00004",
    "coverPage": {
      "Number": "C00004",
      "Status": "Released",
      "Change Type": "ECO",
      "Originator": "Administrator, c (admin)"
    },
    "affectedItems": [
      {
        "aiAttributes": {
          "Item Number": "D00001",
          "Item Description": ""
        }
      },
      {
        "aiAttributes": {
          "Item Number": "D00002",
          "Item Description": ""
        }
      },
      {
        "aiAttributes": {
          "Item Number": "P00001",
          "Item Description": "test",
          "Old Rev": "B",
          "New Rev": "D",
          "Old Lifecycle Phase": "Production",
          "Lifecycle Phase": "Production"
        }
      },
      {
        "aiAttributes": {
          "Item Number": "P00002",
          "Item Description": "",
          "Change Function": "",
          "Old Rev": "C",
          "New Rev": "D",
          "Old Lifecycle Phase": ""
        }
      }
    ]
  }
]

the Webix Code I have:

		webix.ui({
			  view:"datatable",
			  subview:{
			    borderless:true,
			    view:"datatable",
			    headerRowHeight:28,
			    editable:true,
			    columns:[
			      { id:"Number", header:"Number", sort:"string", fillspace:true,editor:"text" },
			      { id:"Status" , header:"Status", editor:"text"},
			      { id:"Date Originated", header:"DateOriginated", editor:"text"},
			      { id:"Change Type", header:"Type", editor:"text" }
			    ],
			    scrollX:false,
			    autoheight:true
			  },
			  on:{
			    onSubViewCreate:function(view, item){
			      view.parse(item.coverPage);
			    	//view.parse(item.affectedItems);
			    }
			  },
			  columns:[
			    { id:"objectID",	header:"ID", sort:"string",  editor:"text",
			     template:"{common.subrow()} #objectID#", width:220 },
			    { id:"name",	header:"ChangeNumber", 		width:200, editor:"text"}
			  ],
			  editable:true,
			  autoheight:true,
			  autowidth:true,
			  url: "Sample_SubviewData.json"
			});