You can choose from a variety of ordering methods. These tell Herschel how it should handle the reordering of a partnumber. Deciding when and what to order can either be dealt with manually by you, or Herschel can use the Plan module to precisely calculate your reordering needs.


There are two simple stock control ordering methods that do not involve the use of the Plan module. These are:

Manual ordering

Herschel does no reorder calculations at all. It is up to you to decide when and how much to order.

Reorder point control

A reorder point and reorder quantity are entered for the item. When stock of the item falls to or below the reorder point Herschel will suggest that an order for the item’s reorder quantity is raised. A report of all such items can be quickly produced.


The remaining ordering methods use the Plan module. They are as follows:

Reorder point control

Economic order quantity

As planned requirements

Weekly batches

Monthly batches


A lead time is held for each partnumber, regardless of its ordering method. This is the number of working days it normally takes for the item to be ordered, made or bought, and received into stock. This figure is very important - the Plan and Shop modules use it, and during the entry of purchase orders Herschel uses the leadtime of an item to calculate its duedate.

Note that a partnumber can have a lead time of zero days if required. This can be used where an item has a short manufacturing time or where it is supplied directly from stock.