How to make Ready Up Button

Hello!

I am trying to make a button where if you click the ready up button it adds 1/5 counter to the button.

No one readys up:
Screenshot 2025-01-17 104132

Somebody readys up:
Screenshot 2025-01-17 104152

Also if someone else ready’s up the counter will go to 2/5 and so on until 5/5 which is the maximum but I want players to be able change the maximum aswell. And if someone presses ready up again it will subtract the counter by 1.

I want this to show on all screens.
Explorer:
image_2025-01-17_104247266
All help is appreciated!