HarmonyOS鸿蒙Next中多个Ability优先启动哪个

HarmonyOS鸿蒙Next中多个Ability优先启动哪个 如何设置那个ability为启动app时的默认页面
2.多个ability同时设置为默认页面，优先启动哪一个

{
  "module": {
    "name": "bbt_app_entry",
    "type": "entry",
    "description": "$string:module_desc",
    "mainElement": "EntryAbility",
    "deviceTypes": [
      "phone",
      "tablet",
      "2in1"
    ],
    "metadata": [
      {
        "name": "ArkTSPartialUpdate",
        "value": "true"
      }
    ],
    "deliveryWithInstall": true,
    "installationFree": false,
    "pages": "$profile:main_pages",
    "abilities": [
      {
        "name": "DeepLinkAbility",
        "srcEntry": "./ets/entryability/DeepLinkAbility.ets",
        "icon": "$media:startIcon",
        "label": "$string:EntryAbility_label",
        "startWindowIcon": "$media:startIcon",
        "startWindowBackground": "$color:app_color_705dd5",
        "exported": true,
        "skills": [
          {
            "entities": [
              "entity.system.browsable",
              "entity.system.home"
            ],
            "actions": [
              "ohos.want.action.viewData",
              "action.system.home"
            ],
            "uris": [
              {
                "scheme": "https",
                "host": "popen.babytree.com",
                "port": "443",
                "path": "path1"
              }
            ],
            "domainVerify": true
          }
        ]
      },
      {
        "name": "EntryAbility",
        "srcEntry": "./ets/entryability/EntryAbility.ets",
        "description": "$string:EntryAbility_desc",
        "icon": "$media:startIcon",
        "label": "$string:app_name",
        "startWindowIcon": "$media:startIcon",
        "startWindowBackground": "$color:start_window_background",
        "exported": true,
        "skills": [
          {
            "entities": [
              "entity.system.home"
            ],
            "actions": [
              "action.system.home"
            ]
          }
        ]
      }
    ],
    "requestPermissions": [
      {
        "name": "ohos.permission.INTERNET",
        "usedScene": {
          "abilities": [
            "EntryAbility"
          ],
          "when": "inuse"
        }
      },
      {
        "name": "ohos.permission.GET_NETWORK_INFO",
        "usedScene": {
          "abilities": [
            "EntryAbility"
          ],
          "when": "inuse"
        }
      },
      {
        "name": "ohos.permission.READ_MEDIA",
        "reason": "$string:permission_reason_read_media",
        "usedScene": {
          "abilities": [
            "EntryAbility"
          ],
          "when": "inuse"
        }
      },
      {
        "name": "ohos.permission.WRITE_MEDIA",
        "reason": "$string:permission_reason_write_media",
        "usedScene": {
          "abilities": [
            "EntryAbility"
          ],
          "when": "inuse"
        }
      },
      {
        "name": "ohos.permission.VIBRATE",
        "usedScene": {
          "abilities": [
            "EntryAbility"
          ],
          "when": "inuse"
        }
      },
      {
        "name": "ohos.permission.PRIVACY_WINDOW",
        "usedScene": {
          "abilities": [
            "EntryAbility"
          ],
          "when": "inuse"
        }
      },
      {
        "name": "ohos.permission.ACCELEROMETER",
        "usedScene": {
          "abilities": [
            "EntryAbility"
          ],
          "when": "inuse"
        }
      }
    ]
  }
}