My Jira project has 4 issue types (e.g. Product Specification), and 3 subtask types (e.g. PMO Task). Any of the 4 issue types can contain zero or more of any of the subtask types.
I'd like to create a filter to see all the subtasks of a given (subtask type, parent issue type) tuple.
E.g. I may want to see all the "PMO Task"s that have ever been created for "Product Specification"s (thus filtering out all the "PMO Task"s that have been created for, e.g. "Development Deliverable" parent tasks.
How do I do that?