Isolating players before spawn

[12p]

Hi.

I'll make my players to get isolated by default, making them invisible to everyone else, and vice versa.

I want to ask a simple question: does this work if I make this function BEFORE the players are spawned?

I mean, will it work if I put this codeblock in the onPlayerJoin event, for example?

Will the players keep being invisible to everyone else, or spawnPlayer resets this setting?

I'd try it but I'm in a hard position to get such a testing ground.

[Controlled]

How are you isolating them?

[12p]

making them invisible to everyone else, and vice versa.

EDIT: nvm, I think I've found a safer way