After entering the session code and clicking join the following will display regardless of the web browser being used:

After the above displays options will differ depending on the web browser being used. See below for further instruction based on web browser type

When using Internet Explorer

Enter the session code and click join. Should the following box display click run:

Click run again and the session will start

When using Google Chrome

Enter the session code and click join. Chrome will commence the download which, once completed,  will display at the bottom left of the screen as follows:

Click the drop down arrow to the right "discard" and click "keep".

The above box will display. Click "Run" again and the application should launch. In some instances you may be prompted one more time, simply click on the "Run" option again.

Fire Fox and Safari are similar to the above except the file downloads are access via a down pointing arrow in the top right corner of the screen.