Greetings.
The version of CA PPM is 13.3.0 on demand.
I setup one partition model with two partitions, as you can see below.

I also associated the Idea object to my newly created partition model, as show below:

My problem is when I try to associate the attributes to a partition.
Partition and Partition Association Mode fields are not visible on object attribute definition page, as Clarity PPM Studio Delevoper Guide instructs at chapter 3, so I can´t define different partitions to attributes.

My user has all administration rights, including: Administration - Studio and Adminitration - Partition Models.
I also purged system cache.
Is there a trick to make this works?
Thank you.