In EPCs you can specify that
These strategies can be modeled as follows:
Using connection types
Alternative resource allocation
If various resources are allocated to a function using the carries out connection type, they will be used alternatively, that is, only one resource is needed to carry out the function, for example.
Additive resource allocation
If various resources are allocated to a function via the contributes to connection type or a combination of the contributes to and carries out connections, the resources are additive, that is, they are all required for carrying out the function.
By specifying the Resource allocation attribute of functions
If various resources are allocated to a function, the Resource allocation attribute of functions (Simulation attribute type group) can be used to specify whether the resources are to be used alternatively or additively. If the Resource allocation attribute has been specified, it has priority over any allocation strategy defined via connection types. Resources are used alternatively in organizational charts.