Each Module requires BI Reports to be installed. If required, the BI report/BI Report Folder can have permissions applied so only certain users or users with certain roles can access/run them.
Oracle also provides in depth details on how to apply these permission here.
Note, If you have applied permissions to your BI Reports or BI Report Folder and are importing a new version of the Reports, ensure the ACL option is set to ‘Preserve’ when performing the Unarchive operation in order to keep your configured missions.