Can I customize my dashboard and main navigation menu?

It's great having you here with us in the Community, Lookingforadvice.

As of now, we're not able to customize a dashboard. Only the date range that can we customize. 

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.

To provide feedback to make the program better, you can do it by going to the Help menu of your account.

Here’s how:

1.   Go to the Gear icon at the top.
2.   Select Feedback.
3.   Enter your comments or product suggestions.
4.   Click Next.

You can also submit your suggestion through this link: Customer Feedback for QuickBooks Online.

I'd also added these articles that might help you in handling your customer transactions, information, reports, and other related topics: 

•  Sales and customers
• Customize invoices, estimates, and sales receipts

If you have other questions about displays or anything about QuickBooks, feel free to reply below. Take care and have a good day!