Can I set a viewerRequestVolume for root tile and disable it for a sub tile?

CesiumJS
1 
{
  "asset": {
    "version": "1.0"
  },
  "geometricError": 100,
  "root": {
    "boundingVolume": {
      "region": [
        -1.3197209591796106,
        0.6988424218,
        -1.3196390408203893,
        0.6989055782,
        0,
        67.00999999999999
      ]
    },
    "geometricError": 100,
    "refine": "ADD",
	"viewerRequestVolume": {
        "sphere": [
            0,
            0,
            0,
            15
          ]
    },
    "children": [
      {
        "boundingVolume": {
          "region": [
            -1.3197209591796106,
            0.6988424218,
            -1.3196390408203893,
            0.6989055782,
            0,
            20
          ]
        },
        "geometricError": 70,
        "content": {
          "uri": "city/tileset.json"
        }
      },
      {
        "viewerRequestVolume": {
          "sphere": [
            -1,
            -1,
            -1,
            -1
          ]
        },
        "boundingVolume": {
          "sphere": [
            0,
            0,
            0,
            1.25
          ]
        },
        "geometricError": 0,
        "content": {
          "uri": "points.pnts"
        }
      }
    ]
  }
}

The sample tileset.json looks like this. Can this work?

2

Hi @jz0224,

Thank you for your question! Can you please share some more information on your use case? What exactly are you trying to accomplish by editing tileset.json?

I am looking forward to learning more.

Best,
Sam