The main menu of NOOVY is a dynamic part that you are able to flip open or close.
To temporarily open the hidden main menu you can hoover your cursor to the side bar where only icons are shown. This can be done from any page you are working on:
It will show you the full menu as soon as your cursor hits the white panel. The angle brackets underneath will point to the right.
In order to have the menu flipped open at all times simply click on the brackets. They will turn around and point to the left.