Use this page to set user access to pages.
Users and groups with access to this page is listed. Their access right is shown on each row. The different access types are: read, modify, create, delete, admin.
Select the appropriate permission setting for the groups/users by ticking the check boxes. Add users or groups by clicking "Add user or user group". Then search for the item you want to add and click "Ok" when finished.
Before saving your changes, decide if you want the setting to be applied only on the current article or if the setting should be applied to all sub-content of the article.
Read more about permissions here.