In the current epf you can achieve decision flow based process, epf's
activity diagram offers decision point. In activity diagram editor,
decision node in the palette as drag n drop will create a decision point.
In current version, decision point label is not available, work-around is
using a Free Text figure on top the decision point to label a decision
point. Free Text (available in same palette) can be used to label the
links (control flows) for decision flow (eg: "YES" for link between
decision point and activity 5).
Enhancement request already placed in the bugzilla, to provide decision
point label and control flow label.