It allows anyone scheduling the batch to use the same default values for all grids in all reports in the batch simultaneously when the batch is run. It is specific to a database connection for a batch, but not specific to any report or grid object in a report in that batch. Since the batch POV values are only saved when the batch is scheduled, you can set different values for the same batch. Changes to the batch POV do not affect the batch designer's user POV. Also, the changes to the batch designer's user POV do not affect the batch POV.