Hello there, slipslope.
The description that will be copied to the invoice is the item description instead of the description or note you entered when entering your timesheets. You can either edit the description of each item and enter the initials from there or manually enter them every time you create an invoice.
For more detail in customizing your sales forms, you can check out these articles:
Let me know if you have other questions. Take care and have a great day!
