[{quoted}](name=Getalong Friend,realm=NA,application-id=ZGEFLEUQ,discussion-id=EAdEvUVB,comment-id=,timestamp=2016-03-04T08:37:12.942+0000)
You need to provide a warning or something.
To be fair, there is a warning when you get into any New Champ Select lobby, that if you don't click the Lock In button, you'll be booted as if you hadn't selected a character. It's certainly possible to make that message stop popping up, but presumably by the time you do that, you know what the message said.
In answer to your question, however:
How many buttons do I need to press before the game client understands that YES I WANT TO PLAY THAT FUCKING CHARACTER?
Two - the champion you want to select, and the Lock In button. Which, yes, is more than previously, but it's honestly not that bad, and helps encourage paying attention to the champ select.