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
You shouldn’t get into trading when you don’t have enough knowledge for it, because not every signal brings profit. Try to observe such groups where you have access, they provide a lot of signals and close many trades even with a small loss, but if you follow them you won’t be able to copy all the trades if there are too many. Because of that, you may end up getting more losing trades, especially if you’re just guessing while trading signals. My opinion is that if you don’t understand what you’re doing, then don’t risk your money.