Add togetherjs to your Tableau Server implementation for real-time collaboration on data visualizations

viztalkjs

<script src="https://togetherjs.com/togetherjs-min.js"></script>
  <script type="text/javascript">
	// add button for viz talk
	window.onload = function() {

			var buttons=document.getElementsByClassName('tab-masthead-toolbar')[0];
			var new_button=document.createElement('a');
			var new_button_text=document.createTextNode('VizTalk');

			new_button.setAttribute('onclick','TogetherJS(this); return false;');
			new_button.setAttribute('class','tab-masthead-toolbar-button');
			new_button.setAttribute('style','padding: 4px 8px; border: 1px solid transparent; text-decoration: none; cursor: pointer; display: inline-block; vertical-align: top; font-size: 12px; color: rgb(90, 90, 90); background-color: transparent;');
			new_button.appendChild(new_button_text);

			buttons.appendChild(new_button,buttons);
	}

	</script>