Configuration of Work Centers 
When you create a work center you have to enter the work center category with which you determine
- Which data can be entered in the work center
- Whether the data fields are mandatory or optional
- In which task lists the work center can be used in
- Whether change documents are created for the work center
Work center categories are defined in Customizing work centers under Define work center category.
You can also create a default work center for each work center category and a default capacity for each capacity category. You enter data in the default work center and in the default capacity that is copied when you create a work center or a capacity.