Bookem allows you to generate one invoice for multiple bookings
1. Open the appointment you want to invoice in your Calendar
2. Select New Invoice
4. This will generate an invoice for that particular booking
5. To add additional appointments, click '+Add Booking'
7. Bookem will list all appointments that have not been invoiced. Pick the next appointment/s you want to add to the invoice from the drop-down.
6. You can add as many bookings to one invoice as you like.