Government leaders in Hall County will hire a mediator to help them come to terms on how to share Local Option Sales Tax revenues.Leaders from neither the county’s municipalities nor the county government had changed their positions on the tax-sharing plan in a meeting Tuesday.But they did agree to spend $250 an hour to hire Denny Galis as a mediator.LOST revenue is meant to help offset local governments’ reliance on property taxes to fund day-to-day operations. How it is distributed is determined every 10 years following a federal count of the population. The first mediated negotiation for leaders in Hall County is set for Oct. 3.Currently, there is a difference of about 17 percentage points between the county government and the municipal leaders’ stances on how the tax should be shared.