You can use template variables along with fixed text to customize the display of each booking.
Multiple lines are supported by adding new lines in the setting.
You can truncate the display if required. The truncation will start where you add the template variable:
[INVOICEENAME] - invoicee name assigned to the booking
[GUESTCUSTOMQ1] - answer to custom question 1
[GUESTCUSTOMQ2] - answer to custom question 2
[GUESTCUSTOMQ3] - answer to custom question 3
[GUESTCUSTOMQ4] - answer to custom question 4
[GUESTCUSTOMQ5] - answer to custom question 5
[GUESTCUSTOMQ6] - answer to custom question 6
[GUESTCUSTOMQ7] - answer to custom question 7
[GUESTCUSTOMQ8] - answer to custom question 8
[GUESTCUSTOMQ9] - answer to custom question 9
multiple lines are supported by adding new lines in the setting.[GUESTCUSTOMQ10] - answer to custom question 10