"Online" and "Away" Status

A few others and I have a problem with the "away" status automatically making you appear "away" if you idle long enough. However, I tend to watch videos on my computer while waiting for game invites but in doing so, the new league client changes me to "away". It makes sense that if you idle long enough it'll be considered afk but an option should be implemented where you can choose to remain online or have a timer set.