...

This will bring up the following form, where you can change the record dates, the hatchery the placement will come from, and enter in a new quantity or percent of quantity.  Entering a quantity will change the quantity from the original scheduled placement.  Select Split to then create a new placement record on the calendar. You can access the Forecast and click on “Load” to see the newly added record with a Record Type of ‘Split’.

...

Calculate and Schedule/Manage Projected Placements

...