It's simpler than you think. Any trader can set up their account to copy signals from another trader.
Then, they connect that same account to a PAMM system and start accepting investments from others.
All they really need to do is pick an account to copy. No actual trading knowledge is required
I don't understand how you can be so sure that if you copy the trades of other traders, you will receive a guaranteed profit. Everyone makes mistakes, and at some point the trader whose transactions you copy will make mistakes, and this will lead to the liquidation of your deposit, and consequently the money of the investors who entrusted their money to you will be lost.