Display invoice status color directly in the booking calendar

How can I display the invoice status with colors in the booking calendar?
Can I see in the booking calendar which invoices have already been created?
How can I check in the booking calendar if invoices are already paid?
Go to Settings/Booking
In the section “Booking plan / Entries”, select the option “Booking and invoice” under “Colors”.

The bookings will then appear as two-colored bars in the calendar:

Top color: Booking status
Bottom color: Invoice/payment status

This allows you to instantly see which bookings are already invoiced or paid, and where action is still required.