If you're wanting to check the hashrate of your miners, you won't be able to do this from within the application currently. Instead, you can find your hashrate within your logs. You can locate your logs by following this guide here:
Once you have found your log files, you'll need to open up the "main.log" file to get the latest results. Once opened, scroll down to the very bottom to get the most recent logs (if you are using other software than Notepad, the latest logs may be displayed at the top instead). You can find your hashrate by looking for the MH/s value, or H/s if you are mining XMR.
Here you can also view the submitted shares, and your hashrate at the pool.