Go to inline Backhouse
Click on Descriptions
Make sure you are in the correct branch by checking top-right corner.
Go to Booking Page
Choose the Language you would like to edit, for example English
Find the column named announcements.houseRules
Put desired text in the blank box on the right then hit Save
If there's text in the column, then House Rule will automatically pop-up
after customer picked their desired pax/date/time and hit Next