This project is a container for the various #acl*_policy_admins projects. Any *_policy_admins project should be created as a sub-project of Policy-Admins for the purpose of grouping them together and easily referencing them as a set, rather than enumerating them explicitly when writing phabricator policy records.
(For background see: T129515: Create a Policy Admins project and move all of the acl*various_policy_admins projects under it as subprojects.)