Hello there. I'm sorry to hear about the frustration you're experiencing with the issues you've encountered while trying to modify rates and change the billable status in QuickBooks. It sounds like this situation has caused significant disruption to your workday, and I understand how frustrating it can be when you're unable to complete essential tasks efficiently. 

However, for me to be able to assist and provide you with an appropriate solution, I'd like to ask for more details of your concern. This is for me to provide a better and more accurate resolution. Did you encounter any error messages when trying to edit the rates assigned and billable status? Any additional info such as screenshots will be much appreciated. Be sure to filter any confidential information.

Once everything is settled, you'll want to utilize this article for guidance in running your payroll seamlessly: Create and run your payroll in QuickBooks Online. 

I want to let you know that we're in this together. The Community Team is always here to ensure that you'll get enough assistance when completing QuickBooks-related tasks. I'll be waiting for your reply and as always, please don't hesitate to leave a comment below if you have any other questions about managing time entries in QuickBooks Online We're always ready to back you up. Keep safe.