I have 5 pics nested, making a horizontal row.
I've centered the anchor point under the rotation parameter, so the group of pics does rotate clockwise, or counter around the center of the images.
I applied the 3D filter to the nest. The tilt attribute is dialed in, working correctly (i.e.) it is centered. However, swivel won't center (i.e.) the anchor point doesn't seem to be adjustable. I move it left and right with no change.
I am using PP 2015 - maybe a bug, maybe user error.
So... how do I adjust the anchor point on the z axis of a nest?