Unable to access View>Customize Touch Bar

The 'Customize Touch Bar...' option under the View menu is grayed out. How can I enable it please?

The Touch Bar contains only two or three item, it has little reason to customize, so it's disabled at this moment.

Oh, I see. Would you like me to have a think about suggestions for Touch Bar items to add?

Sure, please feel free to provide inspirations :slight_smile: