Defining the Attributes of a Process Step 
Prerequisites
You are
inserting a process step in a process model and are in the Maintain Process Model <name> screen.Procedure
If you want to create a new category, enter the name of the category and define the following characteristics:

For an overview of the existing program categories and their characteristics, see Maintenance of Process Models under Edit ® Program categories. You can also enter a new program category here.
Result
The process step is displayed under the program, variant and set size information.