At the beginning of Love Live! Sunshine!! Ep.13, there is a notice written by the character Hanamaru, that writes: 御用の方は屋上にまで.
The English substitle says "If you need us, we'll be on the roof". I get the meaning, but I still can't wrap my head around two things:
御用の方 means customer or guest. Shouldn't "we" be subject in this sentence?
屋上にまで, what does にまで here mean? Doesn't まで mean "until, up to"? I have gone through some old questions in this site but I still can't translate this word here convincingly.