So I have Admin with all the resources that I need and it works great. But I also need one little menu item that would just open a simple form with a button.
I created Menu.js like it's described here:
https://marmelab.com/admin-on-rest//AdminResource.html#menu
And added it to my admin.
But after that I see only items that I have in that Menu, but not resources. How can I have them both: Resources and MenuItems in that menu?