Step 1:

You need to manifest the order.

Step 2: Go to Order details page

1. Go to the order detail page, then click on "Parcel" tab.
2. Select the item(s) you want to split to new parcels.
3. Select "Parcel: New Parcel" and click on "Move" button to generate a new parcel.

Step 3: Print New Packing Slip

1.  Print out new packing slip for all Parcels by click on "Logo" button
2. Do not use the old packing slip you print out before.