Do you mean you have read through this and this lore page?
If so, then you really only need to PM Marionette and/or Mirage to get approval for a business here. Once that is done, you just submit your plan for approval here. Be sure to include some reference to having gotten local ST approval.
And then you wait for the "Approved" ribbon from Gillar


Once approved, there may or may not be a thread required to establish it's in-game existence.