Wash

Hello every body, My virtual airlines is intersted for phpvms but we want more inforations, My question is: mUsst I respected schedul of the flight plan ? For exemple I have a flight plan at 9 am but arrived at 11 am must I departure at 9 am obligatory ? Schal I make precise the times schedul of the flight plan Tanks you Iternation French Runaway ( french virtual airlines )