How to lock column size in category, description, when posting bills?

Hi there, @therestaurantatw.

I recognize the importance of having the option to lock column size when creating or posting a bill inside QuickBooks Online (QBO).
Currently, the option you're trying to access is unavailable, and the columns inside a bill are adjustable depending on the user's preference since it's working as designed. 

If you wish to send a feature suggestion to our Product Development Team, we'll gladly write down the steps below:

1. Access your QuickBooks Online company.
2. On the top right-corner, click the Gear icon.
3. Select Feedback and then enter your comments or product suggestions.
4. Once ready, click Next to submit feedback.

Moreover, if you want to learn how to manage your bills in QuickBooks, you can scan through this article: Enter and manage bills and bill payments in QuickBooks Online
 

If you need additional QBO concerns that you needed help with, you're welcome to post them here in the Community, therestaurantatw. Have a good one!