To make it simple, all the navigation operations are placed on the Wheel button of your mouse. The left button is reserved for the selection (see the Selecting Parts section), and the right button is mainly for the context menus.
Zooming can be done using the mouse wheel or by holding down the SHIFT + RIGHT MOUSE BUTTON while moving the mouse up or down. You can configure the Zooming behavior (zooming speed, zoom center) in the Edition Preferences.
The Viewing position can be changed by holding down the mouse wheel over the Layout and moving the mouse as required. Alternatively you can hold the SHIFT + LEFT MOUSE BUTTON buttons down and move the mouse as required.
Currently BlueBrick does not provide slide bars on the layout pane to pane the view, but this feature may be added one day in a future release.