The Leslie Agency has promoted two staff members and added an employee. Peyton Burke has advanced to senior account manager. She joined the Greenville, S.C., shop in 1999 and works on the Coats & Clark and Mayfield Dairy Farms accounts. Stacey Rosseter has progressed to director of partnership marketing. She joined the agency in 1996 and was most recently a senior account manager. Karen Wessel has joined Leslie as a print producer. Her resume includes stints at LKH&S, DDB and Blau Direct Edge, all in Chicago.