hi.
I have my assembly, and i get it with two position.
one of this - the arm to 60 degrees for the horizontal.
one of this - the arm to 15 degrees for the horizontal.
i have created two configuration ( No Derived configuration ).
one of this is 60° and i put it... only this configuration.
another 15° and i put it ... only this configuration.
but does is not works
only has one position!!!... why??
when I check the angle measure both configurations have the same.
See my replies at Struggling with assembly configuration for controlling drawing views . That Discussion is about a Distance mate, but the same methods and principles will work for your Angle mate.