According to Trudy Brunot for the Houston Chronicle, POG is an acronym for the word planogram. These are used in the merchandising industry to provide a visual outline that dictates how a store's retail space should be organized. Planograms are usually constructed and delegated by a retailer's corporate headquarters. They tell a store's management and staff how to arrange products, shelving, tables, signage and fixtures.
Planograms issued by large companies, such as Best Buy and Walmart, are intended to help their store locations maintain a strict standard of uniformity. Planograms are also provided to retailers by large vendors to manage floor and shelving space so that the vendors' products are optimally placed in areas that are expected to garner the most sales. For example, vendors such as Coca-Cola and Pepsi can provide planograms to grocery stores to let the grocers' staff know to place the vendors' products at the end of the aisles so they are more easily noticed.
Planograms are often altered as seasonal products are rotated. They help a store to arrange new merchandise as it is introduced to the sales floor. Planograms can also dictate pricing, model types and style numbers. They tell a store where to place promotional displays, such as Cadbury Easter candies or Crayola back-to-school supply bins.