If you're referring to either the + New option at the top left or the menus in the left pane, the ability to customize them is currently unavailable.
I can see how having this option would be helpful for you and I'll take note of this.
In the meantime, I recommend visiting our Blog site. This is where we share recent happenings and future developments, such as updates to newly added features. Here's the link: https://quickbooks.intuit.com/blog/.