Look at the attached seq, and the Post Expression and Status Expression of Test1. Do the same for Test2 and Test3, but change the logic to make button 2 pass for testing LED off. Do you really want to have a terminate action in your Post Action? This causes an incomplete test without a pass/fail indication. Instead, set pass/fail like in Test1. If you want to abort the rest of the test, put a Goto End in your Post Action instead of Terminate.
BTW, Mr. Eastwood, can I have your autograph?