Dependents are nodes (activities and decisions) on which an activity depends for completion.
A node may have multiple paths (parallel paths) flowing from, resulting in more than one activity becoming pending when the originating node has completed.
Set dependents if parallel nodes, such as activities must complete before the current activity can become pending. See the following example of the Loan Approval process.
Post Form and Email Form activities are the possible dependents. Forms Received is the activity for which dependents are set.
See Add dependents.