I have frequently needed a Helpdesk Solution rule that will close a parent incident automatically if all child or linked incidents are closed. Or, perhaps, a rule that will change the status of a parent incident to the same status of its child incidents, if the status of all child incidents is the same. Does this possibility exist?
Helpdesk version 6.0.292 (SP3) and above has this ability. A sample automation rule called "Push Status to Parent" is found under Admin > Automation Rules > List Automation Rules
Note: Child incidents need to have their "Link Type" set to 200 as described in the comment of the sample rule.