Approach: put it in scenarios.
Scenarios are interesting Use Case instances.
Scenarios or Instances of Use Cases follow one of the possible sequence of transactions.
A Use Case is a way to use the system, a user’s need.
A Use Case is a sequence of transactions offered by the system, which produces a perceived value to meet the goal of a particular actor.
If Use Cases are used to represent complex interaction, then split it via individual scenarios.
Example feature/Use Case: enroll in the energy savings program of a utility through a retail distributor.
Actors: utility customer ; utility distributor ; utility
1) as a retail distributor, I must be able to notify the utility that the utility consumer has the equipment so that …[provide the value]
2) as the utility, I must be able to provision the equipment and data and notify the customer so that …[provide the value]
3) as the utility, I must be able to handle data validation error so that …[provide the value]
To be continued…