FLOWERY BRANCH — Hall’s city and county officials laid the groundwork Monday for the process of dividing local option sales tax dollars. They tabbed Danny Dunagan, Gainesville mayor, and Tom Oliver, chairman of the Hall County Board of Commissioners, to lead the effort. Officials said they will come up with a tax-sharing proposal in two weeks, giving the rest of the group a week to review the proposal before the next meeting, set for Aug. 13 at the Hall County Courthouse Annex in Gainesville.