Since I've been asked several times, I want to explain what "very active" means: being TO doesn't mean you've to stay logged 10 hours/day, but an almost daily activity is preferred (also only 10-15 minutes per day would be good).
We insisted on the activity because we want to avoid to hire someone that, soon after he was hired, disappears putting us back in the position of having to hire another TO.
About TO activities, oo plan and balance a tournament we use a dedicate thread in our section, so you'll have just to follow a discussion; posting a new tournament requires 15-20 minutes, hosting a tournament usually takes a couple of hours.
Last but not least, you won't be alone and you'll work with 2-3 more TO's.