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Planning hierarchies are an integral part of breaking down your work in GitLab.
To understand how you can use epics and issues together in hierarchies, remember the following:
- [Epics](../epics/index.md) exist in groups.
- [Issues](../../project/issues/index.md) exist in projects.
GitLab is not opinionated on how you structure your work and the hierarchy you can build with multi-level
epics. For example, you can use the hierarchy as a folder of issues for bigger initiatives.
To learn about hierarchies in general, common frameworks, and using GitLab for
portfolio management, see
[How to use GitLab for Agile portfolio planning and project management](https://about.gitlab.com/blog/2020/11/11/gitlab-for-agile-portfolio-planning-project-management/).