As the camber adjustment is via a bushing at the inner pivot point, they have to be set at time of installation. This means you'll have to have some idea of where your desired camber setting will be and what it is presently. It is possible to reset the bushing, but this will entail removing the arms from the subframe pivot and rotating the bushings in their sleeve.
I will be testing the variability of the bushings on my own car as soon as I have both arms completed. My best guestimate is that there will be something like +/- .5 to .75 of a degree of adjustment. Also, if lowering springs have been used these will allow a bit adjustment to the end link height to get the sway bar lever arm back to horizontal.
Josh: What are the details of your design?