I think you have maybe misunderstood how games are set up and played here on E. If you have a game idea or story for a group you should explain it here in this thread and invite players to join you, in the meantime honing the details of the story/setting/characters. Once you have enough players and everyone's happy and ready to go the game is started in the appropriate thread.
You should consider starting at least two threads for a group game, the in-character thread where the story is played out and an out of character thread going by the same title where out of character discussions are held.
Starting a game first then asking players to join it probably is going to fail in a big way.
I hope I am not coming over as pushy; I suppose you can play your game any way you wish but pretty much every other game here is laid out in the format I've just described.
You could also talk with your Mentor who should be able to help explain stuff much better than I can.