Two different broadcast

Hi, I would like to make two broadcaster in my plugin, one where Guest can see (example) "VIP can have.." and in the second, VIP can see with a permission (example) "Thanks to have bought VIP.."
VIP can't see Guest's broadcast and so on.
I can make the two broadcaster, it shows both to everybody, but I can't make the permission and the fact of guest can't see Vip's broadcast and so on.
I'm a beginner and nobody want to teach me to become better in this domain so I try by myself with a lot of mistake
Thanks for helping..

PHP:

if(playerIsVIP) {
  $msg = "YOu are VIP";
}

if(playerIsGuest) {
  $msg = "You are a Guest";
}

$player->sendMessage($msg);

Is it possible in a task?

Yes it would work the same way

OK, I wanna try

And what about the permission? I can't make it anymore