There are mainly two situations where rules are used:
- As a full ruleset on Policy activities
- Rulesets are a set of rules
- It is most of the time a business logic collection which is not related to the rest, and so it is kept in a set/unit by itself.
2. As conditions on activities
- While
- ConditionedActivity Group
- Replicator
- IfElseBranch
Reference taken from a Book - Workflow in the 2007 Microsoft Office System by David Mann