Display parent issues and subtasks together on the issue list page of Redmine
If you sort the issue list by Parent task, the linked subtasks are displayed below their parent issue.
- Click "Options" on the issue list page and add "Parent task" to "Selected Columns"
- Click "Apply"
- Click the column name of the added "Parent task" column to sort the list
If you save the settings above as a "custom query", you can display the issue list with the sort order and other settings with one click. For details, please see Custom query.

