As Licensed Real Estate Salespersons by the State of New York we are able to conduct business anywhere in the state as sponsored by an approved real estate broker--this you know.
My answer to you is to search for listings yourself, be they for sale or for rent, for residential use or commecial use and then present them to your sponsoring broker.
No broker will turn away opportunities that you bring forward (and if they do I'd look for another sponsoring broker) and by doing so you'll be building your own book of business and showing your sponsor-broker that made an excellent choice by bringing you on board.
Remember we are our own success stories and everyone's plan to be successful is an important one, no matter how diverse or unique!
Good luck. You'll be a great success I'm sure!
Licensed Real Estate Salesperson
AC Lawrence, a Bellmarc Company
PS: AC Lawrence is a great place to launch and grow your business! I'd be happy to talk with you further about it.