Google calendar for customers
To allow the customers to add their reservation to their Google Calendar, click on the link Customer Google Calendar to insert the placeholder #add_event_link in the message of the notification email that will be sent to your customer.
Then make sure you have customized your translations (Dashoard> Webba Booking> Settings> Translation).
That is all.
(Of course, you will have followed all the previous steps of the Google Calendar section for this to work.)