A shared mandate, or dual mandate, is a mandate that the seller gives to two separate agents to market and sell his property. This mandate could be a sole mandate to the two agents, which still allows the seller the option to sell it himself, or it could be a sole and exclusive mandate which would prohibit the seller and other agents from selling the property.
In a shared mandate the commission is either shared between the two agents regardless of who sells the property, or it could be 100% to whichever of the two agents successfully sold the property. It is important to state in the mandate what the commission percentage is as well as how the commission is to be paid to the agents.