Category Setup

Uncheck the colors to hide the tabs in google keep. Change the name in the textboxes to change the name of the tab.

How to

You can change the category of a note by changing the color. You can also change the category color of a note in the android app.

Switching to another category is done via the tabbar at the top of Google Keep.

Limitations

The category tabs don't work in the Android and Chrome App. While you can't separate the notes into groups in the above noted environments, you can give each note a color, which will add the note to the right category in the web version.