AutoYast problem

I’m trying to make an auto install using autoyast. But i need to know how to partition different HDDs accordingly.
Say one system has a HDD which is 100GB in size. I want this one to have a /home partition of 40GB.
But another system which has a HDD 1TB in size. I want this one to have a /home partition 150GB in size.

How would I make a autoyast .xml file which does the above ?