Use the groupware calendar

Use the groupware calendar to manage personal and shared appointments while viewing follow-ups, projects, tasks, contracts, compliance dates, logistics dates, and birthdays in the same workspace. Domain projections remain read-only and authoritative in their source application.

Open Profile > Calendar. Switch between month, week, day, and agenda. You can create and edit appointments, drag or resize them, add recurrence rules, participants, privacy, locations, and reminders. Resource requests may be accepted automatically or wait for manager approval.

Select internal participants from the current tenant, enter external participants by email, and choose rooms or equipment when your role may list calendar resources. Appointments organized by another member appear in the Invitations source. Open an invitation to accept, tentatively accept, or decline it; invited appointments remain read-only for the attendee. External participants receive a single-use response link by email. The link opens an unauthenticated response page and becomes invalid after the first successful response.

Choose Import ICS, select a target calendar and upload the calendar file. Map resource addresses to existing rooms or equipment when needed, then start the asynchronous preview. Previewing does not write appointments. Review UID series, components, conflicts, and field outcomes before applying the import.

Workspace keeps all components of a UID series together and preserves source sequences, recurrence exceptions, categories, priorities, relative and absolute alarms, and structured X-* extensions. Migration does not send new invitations or reminders. Apply is bound to the reviewed preview, so a changed source or target becomes a conflict. Repeating an unchanged import does not create duplicate appointments. Verified tenant-local email addresses resolve to internal participants; appointments organized elsewhere remain read-only.

Review incoming scheduling messages

Emails containing a calendar request, reply, or cancellation appear under Scheduling messages. Receiving the email alone never changes your calendar. Review the method, organizer, UID, and sequence, then choose Apply or Reject. Apply revalidates the stored mail attachment against the current calendar state. Conflicting sequences, organizers, or senders are rejected. Your response to an externally organized appointment is sent to the stored organizer as an iTIP REPLY.

Connect a client through /.well-known/caldav with a dedicated CalDAV client credential. Each projection appears as a separate read-only collection. Private and confidential details remain hidden from delegates unless the calendar owner explicitly grants access.

The setup works when browser and CalDAV clients show the same persisted appointments, read-only projections cannot be edited, and resource conflicts are rejected.