You can create a new tab for the ribbon and then load it with your favorite commands. You can also remove a tab that you created and added to the ribbon. You cannot remove the tabs that you didn’t create.
When you create a new tab, OneNote creates a new group to go with it. Your next task after creating a new tab is to rename the group that came with it and populate your new tab with groups and commands.
Right-click anywhere on the ribbon. On the shortcut menu that appears, click Customize The Ribbon.
In the Customize The Ribbon window of the OneNote Options dialog box, in the Customize ...