For bag containers, each bag type lists containers with a Qty and a Per setting (Settings › Kitchen Settings › Bag Types): Bag means the quantity is fixed per bag; Meal means quantity × the number of meals in the bag. The report sums these across every bag created for the date, showing the fixed part under Per Bag (fixed) and the multiplied part under Per Meal ×meals. For meal containers, it counts every meal in those bags that has a container type – from the portion size's Default Container Type (Settings › Kitchen Settings › Portion Sizes) unless overridden on the meal – and totals them per container. Bags must already have been generated for the date; otherwise you see No container assignments found for bags on this delivery date.