Is it possible to set the child incidents status to the same status set to the parent?
Release : 17.2
Component : SERVICE DESK MANAGER
It's possible only when closing incidents using "Close All Children" option.
For the other statuses, it's not possible OOTB. The only option would be to use the edit in list option or implement a customization to change the behavior of Service Desk Manager.
There is an idea created to implement the desired behavior: