you need a simple partnership agreement, with a non comptete agreement, and non solicit agreement, for one year.
The agreement will need to spell out specifically what expenses you will share and what profits you both will take, and who will have ownership of client lists etc.
The non compete and non solicit, is important as after the one year if he or you quit they will limit the places where they can compete against you, and taking your clients.
in the agreement, you should have access to the other location, and the insurance lines should be divided up by percentage, however since you are not licensed their may rules regarding access to them.
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