The Group Attributes page is a special page that is a part of PmWiki security.
When called with the page action ?action=attr
it allows passwords to be set for the following page actions for every page in the group.
Details are given on the passwords and passwords administration pages.
This page may have a more recent version on pmwiki.org: PmWiki:GroupAttributes, and a talk page: PmWiki:GroupAttributes-Talk.