Can you close out all sub tasks when main task is closed?

[Jennifer Dodge]

If I have a task which includes 5 sub tasks, will the sub tasks close out if the main task is closed? If so, how would I do this? 

[Nic Brough -Adaptavist-]

Not by default.  There is a built-in "condition" which can block the issue moving to another status if there are open sub-tasks, but to automatically close sub-tasks requires a bit of code to go through them and issue the required transitions.