The starting date can't be set by the league creator until the league is full, and I assume almost all PLs start pretty immediately after the league fills up since it's rare that somebody wants to wait to start to push that button to start it.
i meant the starting date of the games, like 17.00 CET ;) I believe even the Pl starts automatically when the league is complete, but currently you need to get every info from the creator - and when i was the creator last time i was pretty unsure if i choosed the right opions(so the possibility to check would be great there too)