Normally, there will be a shorts rules memo posted around summer here. The Courtesy Clerks can wear certain type of shorts from a certain date to an ending date
That depends on your Division's Dress code policy. Here in Houston, our Courtesy Clerks can wear black shorts year round, but we're in the humid south so they kinda have to allow it. I would check with your Management or whoever is in charge of HR for your store, they should know the correct answer