I appreciate you for posting this here in the Community, @montgomeryviolins.
I understand that you want to disable the feature that automatically adds a new line item when clicking on the numbers in the number column in the journal entry. Currently, this option is unavailable. I'd encourage sending feedback to our Product Development Team to help improve your QuickBooks experience.
We're closely monitoring the ideas and suggestions of our customers and consider them when prioritizing feature development. When you're ready, here's how to submit feedback:
- Sign in to your QBO account.
- Click the Gear icon at the top, then choose Feedback.
- Enter the feature that you would like us to add in the description box.
- Select Next to send feedback.
I've also included these useful articles for future reference:
You can always find me here if you have any further questions or require assistance with specific QuickBooks Online capabilities. Rest assured that I am always available to help you. Have a wonderful day, and stay safe!