Vertical Layout Group changing alignment

I have a vertical layout group with balloons in them and I would like to have some of them be on the Middle Left and others on the Middle Right.

I can only set the Child Alignment for all elements at once? Is there a way to vary this?

This may help: http://docs.unity3d.com/Manual/script-GridLayoutGroup.html

I think you need to use the Content Fitter.