Block this player from applying to your party button on Party finder.

[foggy fable]

This is more of a short suggestion, because many people have been suffering from these kind of players that just keep applying over and over to your party even when you clearly don't want or need them on it, be it because of the synergy of the party or something as elemental as "You are magical, this is a physical party", the sound is incredibly annoying and it can get tiring to have one unfortunately dedicated player, or even worse, multiple of them keep spamming it over and over.

My suggestion? Add a button besides the O and the X that's a lock that just keeps them from applying to the party to avoid this issue.
Another solution: If the player already sent a request, make the sound stop once they are already on the list.

Thanks in advance, i hope this reaches you all in a good light.

[molten shard]

hmmm...I guess a mute button can work...when you hit the mute button the player remains in view but their profile is greyed out and their notification sound is turned off.

[raven lava]

also telling the applying player if they got rejected or not, might be a good idea too while at it....
like notif or something, cause i sometimes wait a long time wondering too if i'm rejected or nah...

but after a while it's easy to tell tho, maybe with this event come a lot of new/returning player, like maybe they thought host was afk or something so they spam apply

[analog compass]

just play the game without sound