It’s very simple really. You position your camera the way you want then save that setup as “default.br5” in the application directory. Then every time you start Bryce up your camera will be in the same position. I personally have my camera setup to:

 

Position x=0, y=30.72, z=-90

 

That way when I’m in edit mode, when I click the reposition or scale icon for an object, that object will go left and right on the “X” axis, up and down on the “Y” axis and in and out on the “Z” axis eliminating on screen confusion by providing a sense of direction in relation to the coordinate system. I’ve provided a screen capture looking down on my system setup and the camera attributes.