---
title: Browsing sub-issues
intro: 'Learn how to navigate issue hierarchy in your repositories.'
versions:
  feature: 'sub-issues'
type: overview
topics:
  - Project management
---

{% data reusables.issues.about-sub-issues %}

## Navigating issue hierarchy

You can browse through all levels of sub-issues from the parent issue.

1. Navigate to the parent issue.
1. To view the sub-issues under another sub-issue, click the expand toggle ({% octicon "triangle-right" aria-hidden="true" aria-label="triangle-right" %}).

   ![Screenshot of a sub-issues section. The expand toggle is highlighted with an orange rectangle.](/assets/images/help/issues/sub-issue-expand.png)

## Finding a sub-issue's parent issue

When you view a sub-issue, you can always find a link back to the parent issue in the header below the issue title.

![Screenshot of a sub-issue's header. The link to the parent issue, "Parent: create a scoreboard", is highlighted with an orange rectangle.](/assets/images/help/issues/sub-issue-parent.png)

## Using sub-issues in your projects

You can add sub-issues to your projects and make use of the hierarchy data for building views, grouping items, and filtering your views. See [AUTOTITLE](/issues/planning-and-tracking-with-projects/understanding-fields/about-parent-issue-and-sub-issue-progress-fields).