I cannot find such option in documentation.
https://learn.microsoft.com/en-us/office/vba/api/outlook.appointmentitem
It is available here in Outlook User Interface, I want to have it disabled.
My code
Set OutApp = New Outlook.Application
Set OutAppoint = OutApp.CreateItem(olAppointmentItem)
With OutAppoint
.RequiredAttendees = RequiredAtendeesString
.AllDayEvent = True
'.Recipients.Add ("")
.Start = StartDate & " " & StartHour
.End = EndDate & " " & EndHour
.AllDayEvent = AllDayEvent
.Subject = Subject
.Body = Body
.BusyStatus = olFree
.Location = Location
.Save
.MeetingStatus = olMeeting
.ReminderSet = False
.ResponseRequested = False
.PropertyAccessor.SetProperty("http://schemas.microsoft.com/mapi/id/{00062002-0000-0000-C000-000000000046}/825A000B", $true)
.Display
End With
You need extreme care with brackets.
.propertyAccessor.SetProperty "http://schemas.microsoft.com/mapi/id/{00062002-0000-0000-C000-000000000046}/825A000B", True