The first step needs to be a series "bible". As producers it should be on you to come up with an era and a tentative cast of characters. There should also be some sort of backdrop which can serve as an ongoing story arc. As mentioned above, what is the ship (or is it a ship?). Who are the characters? Are they elite, career fast-trackers like in TNG or are they career side-trackers? Maybe they got scred on evaluations or hung out to dry because of pesky bad luck? What segment of the galaxy are they in and who are the antagonists/enemies as well as allies?
Those are the kinds of things a writer needs to know. You can provide the broad strokes and the writers can fill in the blanks.
We have some...small...experience in these matters at Star Trek: Excelsior and if we can be of any help, please feel free to drop me a pm and by all means check out our Facebook page.
Best of luck to you!