To view the access settings of your venue click on the 'Booking' module along the left hand side of the admin page, then click 'Settings' in the top right and then 'Manage basic settings'.
When managing access to your booking sheet you are given the option of deciding which users can view the booking sheet, as shown in the image below:
Selecting 'Anyone' will mean anyone can view and make bookings on the booking sheet. If you would like everyone to be able to view the booking sheet but only members to be able to make bookings, you will need to add a ruleset to your schedule (see Managing Your Schedules).
Users are also able to decide who can view names against the bookings, as shown in the image below:
Make sure you save any changes you make using the 'Save settings' tab at the bottom of the page before you exit.