Most of the numbers are just bookkeeping that the manager need not follow. Again, you get the idea. This allows a manger to alter the lineups on the field based on game parameters such as current score, number of shots, match time, etc. The conditional language may seem a little daunting, but it is not. The example I've shown here is rather complex to give you a feel for what you CAN do.
Most managers only use a few conditionals.
EEFL takes anywhere from 1 hour to 6 hours per session, I would guess, though it tends toward the low side of that range. Again, a lot depends upon how much time a manager spends interacting with the other managers, scouting, how complex the conditions are, etc. Then there is the draft, trading, the playoffs, etc. It is fairly close to EEFL in all aspects, but deadlines are run on the order of 2-3 days at most. This league is really for EEFL veterans only because of the necessity to really know the rules well in order to meet the turnaround times.