OreAnnouncer is consisted of 7 permissions, you can use one permission to give them all.

General permissions

You can give all permissions by using this one oreannouncer.*.

Full permissions

Permission Description
oreannouncer.alertupdates Send a message if there is an update
oreannouncer.bypass.announce Bypass announce on dig Bypass ore announce on own placed blocks Allow access to /oa help
oreannouncer.cmd.hide Allow access to /oa hide
oreannouncer.cmd.reload Allow access to /oa reload
oreannouncer.see See announced messages
oreannouncer.* All permissions are granted