The current status are good (Unconfirmed, Confirmed, Arrived, Completed) but we need the option to add custom statuses as well.

Examples:
1. Clients that have "Arrived" might not be fully checked in but there is no way to see the difference. It creates additional work for staff and service providers.
2. Some appointments are paid at check-in, but when it is paid for the appointment moves to completed which makes it look like the client has left.
3. Some appointments must be reviewed by staff 24h prior and need an additional status to mark accordingly.

If there was a customization option then companies can add their own as needed, which would be very helpful.