How do we add additional columns to QuickBooks invoices

Good day, @hafsa-tahirengin.

The option to create additional columns on invoices is unavailable in QuickBooks Online (QBO).

I can see how this option would be helpful for you and your business. Therefore, let me take note of this as a suggestion to improve your QuickBooks experience.

You can also personally send your own feedback to our product developers. That way, they can review your request and most likely include it in our future updates. Here's how:

1. Select the Gear icon at the top, then click Feedback.
2. Enter your comments or product suggestions and select Next to submit feedback.

Moreover, you can create a new template to personalise and add specific info to your sales forms. This feature will help customise the appearance and layout of your invoices. That way, you can enhance your business' communications. 

If you have any other concerns, feedback, or questions, don't hesitate and come back to the Community. I'm always here to help you. Have a great day.