There are currently two different ways to book on bubble; Express Book and Browse and Book.
Browse & Book lets you send booking requests out to specific babysitters who then need to accept it.
Express Book lets you post up a job to matching sitters in your area who then bid for it. You then confirm it with the one you like best. It's especially useful for short notice needs.
You can find out more about both of these booking methods here.
Want to find a trusted babysitter? Download bubble for FREE here.