TL;DR
Let's Do It Together!
Step 1: Access Orders
Log in to your Shopify account.
Look for Orders and click on it.
Find the order you want to work on, for example, order number 1001.

Step 2: Print Documents
Click on the Print option located in the upper right of the order page.
A dropdown menu will appear with printing options.
Choose Order Printer or a third-party application to print invoices and packing slips.
Uncheck the Pick List and ensure Packing Slip and Invoice are checked.
Click Continue Print to proceed.
Your printer settings will open, allowing you to print the documents.

Step 3: Edit Templates
To edit your packing slip and invoice templates, go to your app list.
Open Order Printer and click on Templates.
Select the template you want to edit.
Edit the template via code and click Preview to see changes.

