You can attach a note to an appointment — a remark visible only to you and your colleagues (e.g. "client prefers the window seat" or "call before").
Step 1 — Open the appointment details
Tap the appointment in the calendar, then tap details to open the full screen.
Step 2 — Write the note
In the note section, type the text you want. It is saved with that appointment.
The note stays attached to the appointment and you see it every time you open it. ✅