Cross-Area Functions in Resource Planning 
You can use SAP Multiresource Scheduling for demands from different areas: The source of the demand can be a service order from CRM or a project from a cProject, for example.
Depending on the source of the demand, additional steps may be required or can be carried out when you plan resources, and these are described in the following sections:
The following sections describe cross-area functions of resource planning, that is, functions that you can use practically independently of the origin of the demand.