The extension is launched by a single left click on the Examus icon in the upper right corner of the Google Chrome browser:

 

The Examus icon can also be displayed in the drop-down menu that appears when you click on the browser settings menuhttps://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/36004225132/original/lhWVkPytamG_cT9j0qUhNWfckXr3iJg8iQ.png?1523434009 in the upper-right corner:

 

If you don't see the Examus icon in the upper-right corner of the Google Chrome browser, or it's inactive, it may mean that the extension is installed but it's still inactive (disabled). Open the link that you used to download the app and click the Enable button:

 

You can also use the following link: chrome://extensions/. On this page, you will see a list of installed extensions. Make sure that the extension is in the list of installed extensions and it is active (enabled):


 

More information about extensions in Chrome: https://support.google.com/chrome_webstore/answer/2664769?hl=ru