In order to add a popup modal like in our demo you need to edit the code.
If you want to add a popup modal to index page (homepage) please edit /templates/base.index.html
Then add the following code before </body> tag.
If you want to display it in the chat page add it to /templates/base.html
<div class="modal fade" id="demoModal" tabindex="-1" role="dialog" aria-labelledby="demoModalLabel" aria-hidden="true"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <h5 class="modal-title" id="demoModalLabel">Welcome to ChatNet Demo!</h5> <button type="button" class="close" data-dismiss="modal" aria-label="Close"> <span aria-hidden="true">×</span> </button> </div> <div class="modal-body"> This is a Modal </div> <div class="modal-footer"> <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button> </div> </div> </div></div><script> $('#demoModal').modal('show');</script>