SAP PS - customize projects types to project profile

Hello,

I want to specify project types to project profiles. For exapmle, I have 7 project types, but I don't want them all to show up in different project profiles. I have assigned the project types to the project profile . However, all project types still appear in all project profiles. For example, let the project types be a,b,c,d in project profile X and project types a,b,c,d,e,f in project profile Y.

I would be glad if you help. Thanks in advance.