In current catalog template you are not able to help the end user to see if they need to order in a certain lot size (package size) or by a minimum order quantity.
By adding attributes (columns) in the catalog template the end user will see if they need to order e.g min quantity 208 liter and in lot size 208 liter, 416 liter, 624 liter
When they order a item with a min quantity there will be a default value prefilled in the quantity field based on the min quantity from the template.