These scripts allow players on the server to press a button (displayed on screen) to trigger a function.
Note that if you combine several scripts you will have to change the texts positions so that they don't overlap by changing the last value in setPoint()
You can also change the size and font type in createServerFontString()

Changing the button in Init() will change both the button displayed on screen and the button used to trigger the function.
Here is a non-exhaustive list of buttons you can use

"+usereload"
"weapnext"
"+gostand"
"+melee"
"+actionslot 1"
"+actionslot 2"
"+actionslot 3"
"+actionslot 4"
"+actionslot 5"
"+actionslot 6"
"+actionslot 7"
"+frag"
"+smoke"
"+attack"
"+speed_throw"
"+stance"
"+breathe_sprint"

camera_switch_vote_on_button_press.gsc

Allows the players to toggle their vote to change the camera_thirdPerson dvar on the server (players vote no by default)
When enough players vote yes the server changes the dvar and resets the vote counts.
The amount of votes required is more than 50% of the players: 1/1 | 2/2 | 3/4 | 3/5 | 4/6 etc.
Bots are ignored for the votes.

sniper_attachment_switch_on_button_press.gsc

Allows the player to cycle between several attachments for a list of weapons.
Displays the key to press to switch to the next attachment as well as the current attachment selected top right.
Whenever the player press the key, re-spawns or switches to another class with a valid weapon it will give him the attachment he wants.

This script has been written for the L118A, MSR and Intervention but can easily be modified or even optimized to support more weapons.

suicide_on_button_press.gsc

The player dies when pressing the button