Modify new Question
Modify new created question
Survey.Survey.cssType = "bootstrap";
Survey.defaultBootstrapCss.navigationButton = "btn btn-green";
//Add a tag property
Survey.JsonObject.metaData.addProperty("questionbase", "tag");
//Make name and tag properties read-only
Survey.JsonObject.metaData.findProperty("questionbase", "name").readOnly = true;
Survey.JsonObject.metaData.findProperty("questionbase", "tag").readOnly = true;
var editorOptions = { };
var editor = new SurveyEditor.SurveyEditor("editorElement", editorOptions);

var questionCounter = 1;
//Set the name property different from the default value 
//and set the tag property to a generated GUID value.
editor.onQuestionAdded.add(function(sender, options){
    var q = options.question;
    var t = q.getType();
    q.name = "Question" + t[0].toUpperCase() + t.substring(1) + questionCounter;
    q.tag = guid();
    questionCounter ++;
});

function guid() {
  function s4() {
    return Math.floor((1 + Math.random()) * 0x10000)
      .toString(16)
      .substring(1);
  }
  return s4() + s4() + '-' + s4() + '-' + s4() + '-' +
    s4() + '-' + s4() + s4() + s4();
}
<!DOCTYPE html>
<html>
<head>
    <title>Modify new created question, SurveyJS Editor Example</title>
    <script src="https://unpkg.com/jquery"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.3.0/knockout-min.js"></script>
    <script src="https://surveyjs.azureedge.net/0.96.3/survey.ko.js"></script>
  
    <script src="https://cdnjs.cloudflare.com/ajax/libs/ace/1.2.0/ace.min.js" type="text/javascript" charset="utf-8"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/ace/1.2.0/worker-json.js" type="text/javascript" charset="utf-8"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/ace/1.2.0/mode-json.js" type="text/javascript" charset="utf-8"></script>
    <link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/css/select2.min.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/js/select2.min.js"></script>
    <link href="https://surveyjs.azureedge.net/0.96.3/surveyeditor.css" type="text/css" rel="stylesheet" />
    <script src="https://surveyjs.azureedge.net/0.96.3/surveyeditor.js"></script>
    <link rel="stylesheet" href="https://unpkg.com/bootstrap@3.3.7/dist/css/bootstrap.min.css">
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="./index.css">

</head>
<body>
        <div id="surveyContainer">
        <div id="editorElement"></div>
    </div>

<script type="text/javascript" src="./index.js"></script>

</body>
</html>
.btn-green {
  background-color: #1ab394;
  color: #fff;
  border-radius: 3px;
}
.btn-green:hover, .btn-green:focus {
    background-color: #18a689;
    color: #fff;
}
.panel-footer {
    padding: 0 15px;
    border:none;
    text-align: right;
    background-color: #fff;
}

Use onQuestionAdded event

Use this event to modify a new created question in the designer as you want.

You may make any property readonly by setting its "readOnly" attribute to true. It is always false by default.

Survey.JsonObject.metaData.findProperty("questionbase", "name").readOnly = true;