To begin the update process click :
Help->Update
This connects to the update server, which will show new releases compatible with your current version:
Select the feature you wish to update and click Next. This opens the license agreement, which you must agree to:
Click Next and click Finish on the final page:
Before the installation begins you will get a warning that the download is not signed:
This warning can be ignored.
Finally, let EPE restart and you should see the new version installed. You can check this by clicking:
Help->About and clicking the Feature information button. You should see the new feature version displayed.
In this dialog the left hand window shows the features you have installed while the right hand window gives you management options.
If you click 'Replace with another version' you can return to a previous version of EPE. This is at present the only option available in EPE
but as more features become available you will be able to disable or enable them as you choose.