Event fields reference

The event form is generated from the calendar’s own field set, so labels and order can differ from the defaults below. The twelve built-in fields are always present and can never be removed or retyped.

Built-in fields

Field	Required	Notes
Title	Yes	Up to 255 characters.
Type	Yes	One of the calendar’s event types. Sets the colour and icon.
All day	Yes	Chooses the temporal shape: dates only, or start and end times.
Starts	Yes	A date when all-day, a date and time otherwise.
Ends	Yes	Must be on or after the start.
Who is away	Only for out-of-office	The person the absence belongs to. Shown only when the type is Out of office.
Attendees	No	Up to 200 people and 50 groups. Group selection depends on the calendar’s settings.
Repeats	No	A recurrence rule. See Repeat an event.
Location	No	Free text, up to 255 characters.
Remind (minutes before)	No	A whole number, 0 to 20,160 (fourteen days).
Meeting link	No	Must start with http:// or https://. Up to 2,000 characters.
Notes	No	Up to 10,000 characters.

Custom fields added through Customise fields appear alongside these, in the position the calendar’s field set gives them.

Recurrence rule

Control	Values
Frequency	Day, Weekday, Week, 2 weeks, Month
Every	Interval, 1 to 52
On these days	Weekday toggles; shown for the Week frequency
Ends	Never, After a number of times (1 to 500), or On a date

A rule takes a count or an end date, never both. Occurrences past the calendar’s recurrence range are not drawn.

Event types

Type	Icon	Default colour
Event	📌	#5B5BD6
Meeting	👥	#2563EB
Milestone	🏁	#16A34A
Deadline	⏰	#DC2626
Out of office	🌴	#64748B
Holiday	🎉	#D97706

Names and colours are per calendar and can be changed; a calendar can hold up to 24 types. The six above cannot be removed.

Rules the form enforces

• An out-of-office event must cover whole days, and needs the person it belongs to.
• An end must be on or after the start.
• You can edit and delete events you created; editors can edit anyone’s.
• Recording an absence for somebody else requires an editor.
• Saving an event somebody else changed first is refused rather than overwriting it.

Permissions

Action	Who
Create a calendar, change its settings	Owner or editor
Create an event	Any service member
Edit or delete an event	Its creator, or an editor
Record an absence for somebody else	Editor

For what each field does in practice, see Add an event.