This is a script of the type vdk_call, in order to receive messages to different jobs, it also consists of a history menu for your calls!
https://cdn.discordapp.com/attachments/809196118260973599/853268207670263818/unknown.png https://cdn.discordapp.com/attachments/809196118260973599/853268427731763220/unknown.png
You can simply find the triggers and others to use at the bottom of the script (client/cl_call.lua)