EDITED AFTER READING SOME OTHER ANSWERS, SINCE MAYBE I DO NOT UNDERSTAND YOUR QUESTION, BUT I THINK I DO: all real estate licensees must disclose, both in advertising their parcels for sale, as well as when you either sign to buy, or sign to sell, on the contract, right under your name, that you are a licensed real estate [salesperson] or [broker] in the state of x where x = where your license is.
when you hang your salesperson's license (i presume you are not a broker) in a broker's office, you should have signed an independent contractor's agreement with that broker.
please read it.
i have never seen one that does not say that if you buy and sell your own real estate while your license hangs in that office and while you are not a broker, but a salesperson (you cannot become a broker until you have paid your dues), under the auspices of that managing broker ("the house"), that you don't have to split the commission gained by you with the managing broker, the house, exactly by the same percentage that the ICA already states you get when you do not buy and sell on your own behalf, but for the public.
do not do this without first reading over your independent contractor's agreement. and do not do it even if no language to that effect is in it, unless you sit down with your broker and ask if it's okay that you keep 100% of the commission gained on buying and selling your own real estate.
it just isn't right. when you do manage a real estate office as its broker, you are going to be putting out thousands of dollars a year to pay a secretary, a bookkeeper, for signage, business cards, stationary, contract forms, books, phones, advertising, education, guest speakers, and all things that help an agent get business. how would YOU feel if your agent did that to you???
ANOTHER EDIT BASED ON FINE ADVICE GIVEN BY C21 BUST (?): when you list a property as the agent, you owe all loyalty to your seller. then say you want to buy the property. now you are truly in a quandary. you cannot represent the interests of the seller and know (usually true) her sales tactics and negotiating secrets too while at the same time representing yourself as the buyer. in that case, talk to your managing broker about appointing a "designated agent" to represent YOU as a buyer. you can really cook yourself into the kettle if you act as dual agent in THAT particular situation! you might even get sued. watch it...
Realtor (r), broker owner, consultant, residential and investment specialist, creative counselor (estates), 1031 starker tax deferred specialist (national), etc., 23 years.