By default, all appointments in a calendar are included when that calendar is shared through e-mail or by using the Office.com Sharing Service. This setting allows users to publish only appointments that are within users' working hours.
| Registry Hive | HKEY_CURRENT_USER |
| Registry Path | software\policies\microsoft\office\16.0\outlook\options\pubcal |
| Value Name | showworkinghoursonly |
| Value Type | REG_DWORD |
| Enabled Value | 1 |
| Disabled Value | 0 |