Creating a Rules Composer DC 
You create a rules composer DC to model rules in it. A rules composer DC contains:
In the SAP NetWeaver Developer Studio, choose
In the wizard that appears, expand the Rules Composer node and choose Rules Composer Development Component. Choose Next.
In the screen that appears, expand the development configuration node and choose the software component (SC) node where you want to create the DC. Choose Next.
In the screen that appears, enter the name of the project in the Name field and choose Finish.