OneNote supports password protecting sections and they are unlocked once a user types the password and can be locked again by either a timeout period or when you navigate away from the section. This option will lock the section once you navigate away from the password protected section.
| Registry Hive | HKEY_CURRENT_USER |
| Registry Path | software\policies\microsoft\office\15.0\onenote\security |
| Value Name | locksectionsimmediately |
| Value Type | REG_DWORD |
| Enabled Value | 1 |
| Disabled Value | 0 |