Default 2-part divisi: outside/top, inside/bottom

1st movement, m412: divide by stand (1st stand/top, 2nd stand/bottom,  3rd stand/top, etc.) This is only for violins. (Violas and cellos continue as normal.)

1st movement m431-440, violas divide by stand (similar music as the violins)

5th movement, beginning: violin 1 and violin 2 3 part divisi by stand (6 separate parts for violins), with someone inside-outside within your staff. Violas, divi by stand