Ho to post array of object from form in express.js?

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Javascript

HTML5

Node.js

Express

I am trying to send array of object using form in express.js but It is sending array of each properties not the array of object as following.

"group": {
  "groupName": "Kai Hess",
  "user":{
      "name": [
        "fynetin",
        "rupemys",
        "robik"
      ],
      "id": [
        "6",
        "30",
        "18"
      ]
    }
}

But I want like this

"group": {
  "groupName": "Kristen Mayo",
  "user": [
    {
      "name": "gufem",
      "id": "53",
    },
    {
      "name": "bytybotar",
      "id": "68",
    },
    {
      "name": "copamyruk",
      "id": "59"
    }
  ]
}

I am using body-parser from express.

app.use(express.urlencoded({ extended: true }));

These are test routes to handle form request.

app.get('/test', function (req, res) {
  return res.render('test');
});

app.post('/test', function (req, res) {
  return res.json(req.body);
});

Here is my form.

<form action="/test" method="post">
    <input type="text" name="[group][groupName]"    placeholder="groupName">
    <br><br>
    <input type="text"   name="[group][user][name]"   placeholder="name-1">
    <input type="number" name="[group][user][id]"     placeholder="id-1">
    <br><br>
    <input type="text"   name="[group][user][name]"   placeholder="name-2">
    <input type="number" name="[group][user][id]"     placeholder="id-2">
    <br><br>
    <input type="text"   name="[group][user][name]"   placeholder="name-3">
    <input type="number" name="[group][user][id]"     placeholder="id-3">
    <br><br>
    <input type="submit" value="submit">
</form>

What I have tried:

I have tried several patterns like:

[group][user][name]
[group][user][][name]
[group][[user][name]]
[group][user][[name]]

Using indexes make it work but I don't want to use them because my form will be dynamic so rows can be added and removed. Like following.

[group][user][1][name]
[group][user][2][name]