Notebookbar Options Grayed Out

I am running version on Ubuntu Mate 16.04.

The Notebookbar option is available from the View… menu. However, all the Notebookbar options are grayed out. How can I enable them?


Tools → Options → LibreOffice → Advanced → Enable experimental features. After restarting the program you need to activate the Notebookbar on View → Toolbar layout → Notebookbar: only then all Notebookbar options will be available.

Thank you! I forgot to select View…Toolbar layout … Notebook bar. Works like a charm!