| `/child_epic <epic>` | | | ✓ | Add child epic to `<epic>`. The `<epic>` value should be in the format of `&epic`, `group&epic`, or a URL to an epic. ([Introduced in GitLab 12.0](https://gitlab.com/gitlab-org/gitlab/issues/7330)) **(ULTIMATE)** |
| `/remove_child_epic <epic>` | | | ✓ | Remove child epic from `<epic>`. The `<epic>` value should be in the format of `&epic`, `group&epic`, or a URL to an epic. ([Introduced in GitLab 12.0](https://gitlab.com/gitlab-org/gitlab/issues/7330)) **(ULTIMATE)** |