The first step in designing an Identity Manager solution is to decide exactly what you want your solution to do in your business. Use the Identity Manager 4.0.2 Framework Installation Guide to create a plan for your Identity Manager solution by using Designer. You can also design your User Application solution by using the User Application: Design Guide.
Designer allows you to capture information into a project and share the information with other people. You can also model the solution in Designer before you start making changes. For more information about Designer see Understanding Designer for Identity Manager.