Jeannette noticed that her boss, the store manager, always seems overly busy and stressed out, so Jeannette offered to take over the task of scheduling the salespeople's weekly shifts. The store manager was relieved to delegate this time-consuming task to an experienced employee, and Jeannette is enjoying having the ability to give her friends the best time slots and her less-than-friendly co-workers the undesirable time slots. Which tactic has Jeannette used to increase her own power