How are we supposed to utilize price tiers in the new layout if it doesn't obey the set rule and gives no option to adjust it?

I'm here to provide some insights about price rules in QuickBooks Online (QBO), @RMountsSales24.

The price rules feature is unavailable in the new invoice experience.

As a workaround, integrating a third-party app into your QBO account is another way to apply price rules to your invoices. 

You can submit feedback to improve QuickBooks and our engineers will take a look at it for future enhancements.

1. Head to the Gear icon at the top, then click Feedback.
2. Enter your comments or suggestions.
3. Then select Next to submit Feedback.

I've added this article to manage and personalize your sales form: Customize invoices, estimates, and sales receipts in QuickBooks Online.

If you have more concerns related to price rules in QBO, feel free to reply, I'm just around the corner to help. Have a good one.