# Issue Hierarchy Project -\> Milestone -\> Task -\> Sub-task **URL:** \ **Category:** Questions & Answers\ **Tags:** customhierarchy, jira\ **Created:** [June 13, 2024, 3:26pm UTC](https://community.eazybi.com/t/issue-hierarchy-project-milestone-task-sub-task/17481 "2024-06-13T15:26:00Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![Elita.Kalane](https://community.eazybi.com/user_avatar/community.eazybi.com/elita.kalane/32/14957_2.png) [@Elita.Kalane](https://community.eazybi.com/u/Elita.Kalane)\ **Post date:** [June 20, 2024, 12:30pm UTC](https://community.eazybi.com/t/issue-hierarchy-project-milestone-task-sub-task/17481/2 "2024-06-20T12:30:38Z")
Hi @Michmbayed1 , Thanks for posting your question! If you are using Plans hierarchy, you can follow this link to learn how to enable/setup the hierarchy - [Plans custom fields](https://docs.eazybi.com/eazybi/data-import/data-from-jira/plans-custom-fields) If this is a custom/additional hiearchy, I suggest reading this blog post [How to create an additional issue hierarchy](https://community.eazybi.com/t/how-to-create-an-additional-issue-hierarchy/9793) and you can also check out a video from eazyBI Community Days where hierarchy set up is also explained (starting from minute 16:30) - [https://www.youtube.com/watch?v=IwGHU44T8Nw](https://www.youtube.com/watch?v=IwGHU44T8Nw) Here you can read about the additional issue hierarchies in the documentation page - [Additional Issue hierarchies](https://docs.eazybi.com/eazybi/data-import/data-from-jira/advanced-data-import-options/additional-issue-hierarchies) **Note**! The issue hierachies will only work when for issues with single parents. If there are two parents for an issue, the hierarchy won’t work. Best wishes, Elita from [support@eazybi.com](mailto:support@eazybi.com) --- _[View the full topic](https://community.eazybi.com/t/issue-hierarchy-project-milestone-task-sub-task/17481)._