# Lock time slot if at least one place is booked

Dashboard > Webba Booking > Settings > Appointments

Add the services for which this rule must be applied. To use in conjunction with auto lock feature (Settings > Mode) and for services with several places per time slot.

Example: A service has 5 places per slot. If someone books 2 places and the service set to use this locking rule, the left 3 places would be unavailable. In this option, we set services that use the rule or leave empty.