But how to ask for one sooner if you don't know if you have made it to final? Can it be used next week (for 18.02-24.02 week)?
Before the first deadline you should say that you are playing the semifinal and you will need a SE in case you win it. Then the manager can either wait for your match to be over or leave the spot in the draw which you get if you win of the first alternative gets if you lose.
And sorry but you can't use it next week.