If you run the FAH client, choose 4 as the team number and choose FAH as the preference, you will get regular FAH work units (WUs) with deadlines and your stats will go to the FAH Stats Page.

If you do all the above, but choose GAH as your preference, you will receive untimed WUs (no deadline) and your stats will go to the Team Helix FAH Stats Page as well. Please configure for the untimed WUs if you have a computer which is unable to meet the preferred deadlines of the timed WUs.

You can find the preferred deadlines from Stanford's Currently Running Projects
page here.