I appreciate the time you've taken to resolve the problem regarding enabling the Sales Order in your QuickBooks Desktop (QBDT) Mac Plus, prints33.

Please note that the Sales Order feature is available only in QBDT Premier and Enterprise. If you need to use packing slip in QBDT, you can create a customized invoice template instead and modify it to function as a packing slip. 

However, if you'd prefer to utilize a dedicated packing slip feature, you can consider exploring third-party applications that offers this functionality. 

The Community is always here if you need anything else.