Putting a time limit on Stim 2 without affecting Stim 1 in a trial

Hi,

I'm trying to design a study in which participants are asked to press a button in response to Stim 1 and either press a button or do nothing for Stim 2. At the moment, I can't seem to put a time limit on Stim 2 without affecting Stim 1. Does anyone have any ideas?

Thanks!

Not an easy way to do that one a single trial. Is it possible for you to break the responses up such that one follows the other as an independent trial?

That might work. I'll give it a shot. Thanks!