Hi,
You may try the following:
1. Create new Attribute Alias
Administration tab -> Service Desk -> Application Data -> Codes -> Attribute Alias
object name: cr
alias name: parent_group
alias value: parent.group
2.Create new Activity Associations
Administration tab -> Activity Associations -> Activity Associations
Symbol: cr_parent_group
Object type: R/I/P
object type attribute: parent_group
activity type: Field Update
3. Create new site-defined condition Macro, add condition:
Group Equals cr_parent_group
I just created the macro, you may test it further.
Regards,
Mark