Q: Instead of scaling down the model, is it possible to position the 'camera' to a particular part of the model? When creating large models, scaling down will make the model too small to see any details.
A: No, it is not possible to position the camera or zoom in.
However there are two solutions to this problem
One option is not to scale the assembly and let LPub cut off the image at the page edge but there is a good chance that part of your model where you are building is cut off too.
The other solution for this is rather complex and very work intensive. You need a bit more than basic computer skills for it, but we will try to explain.
The tutorial for this can be found here.