If one belongs to a synagogue, and the synagogue tells its members that the community's Shabbos candle-lighting time is a certain time, is one obligated to light at that time (or by 18 minutes after perhaps?), or may one light up until the actual latest candle-lighting time?
I ask because in some areas in the summer, a shul may say that its candle-lighting time is say 7:30 (a few minutes after plag hamincha, the earliest time), but the actual latest time is nearly 9pm. While the earlier time may work for some people, others might want to delay candle lighting somewhat later than the community's official time. Is this permitted?