LITTLE ROCK, Ark. (AP) — Those who greet customers at the entrance of Walmart stores nationwide are uneasy about a change in their duties. Greeters no longer man the front doors during the 10 p.m. to 7 a.m. shift at the stores, and this month they were moved deeper into the stores to help shoppers find what they're looking for and navigate the aisles. "They'll still greet.