Multiplier of lots by signal orders

Good afternoon. Programmer services are required. An automatic lot multiplier is needed to open orders on the terminal mt4 "receiver" on the signals of the supplier changed by the installed multiplier (including). And decimal, for example, 0.1; 0.05; 1.5, etc.) currency pairs - any from the "signal provider" P.S. I know it is and it costs $10. But how it works, unfortunately I don’t know... Maybe it's a script.