You can watch the video tutorial, which provides a step-by-step guide through the process.
You can display the tip amount on your invoices by following the simple steps below:
When you activate this option, the ‘Tips’ will be printed as a line item.
Step 1: Open Simple Invoice from your Shopify store’s “Apps” section.
Step 2: Click on “Templates” in the Simple Invoice dashboard.
Step 3: Click on the ‘Options’ section, and click on the ‘Show Order Tip’ under the ‘Line Items’.
Step 4: Please click the “Save” button to confirm your changes.