> For the complete documentation index, see [llms.txt](https://documentation.panomics.bio/documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.panomics.bio/documentation/access-control/concepts.md).

# Core Concepts

Before diving into workflows, it’s important to understand the building blocks of access control.

This section covers:

* **Teams** - grouping users into addressable entities.
* **Resources & hierarchy** - how Projects, Analyses, and other objects relate.
* **Inheritance & overrides** - how grants flow down (and how to stop them).
* **Umbrella actions & admin** - why Panomics splits actions and how admin works.

## Pages in this section

* [Teams](/documentation/access-control/concepts/teams.md) - Grouping users into addressable entities
* [Resources & hierarchy](/documentation/access-control/concepts/resources-hierarchy.md) - How Projects, Analyses, and other objects relate
* [Inheritance & overrides](/documentation/access-control/concepts/inheritance-overrides.md) - How grants flow down (and how to stop them)
* [Umbrella actions & admin](/documentation/access-control/concepts/umbrella-admin.md) - Why Panomics splits actions and how admin works

## Related sections

* [Resource Access Window (UI guide)](/documentation/access-control/ui.md) - How to use these concepts in the interface
* [System Teams](/documentation/access-control/system-teams.md) - Special teams managed by Panomics