At the top of the list, there'll be "My List" and "All" or something. Click on your "My List" Tat's the list of KQs that you can join. Then look at the recruit time. It'll be something like 13.32~13.42. That means that the KQ will start recruiting at 13.32. The current time is displayed in a small blue box below the list. About 2 min before the recruit time, I suggest you press Shift + Z, and wait for the KQ to start recruiting. As soon as the status changes to "Recruiting", press "Participate".
More info
here
Also please don't post in that thread as it's a really old one.
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