Ensure dependencies are installed and running before frozen_ambulance
Place script in resources directory
Make sure you have an 'police' in your jobs table and grades in your 'job_grades' table of your SQL database for ESX / jobs.lua for QBCore(Can be from previous police job)
Edit config as desired
Add ensure frozen_police to your server.cfg (ENSURE AFTER DEPENDENCIES)
Ensure that esx_policejob / qb-policejob or any other police job script is removed