On Social Trader Tools, you can choose from several risk management methods to control how trade sizes are copied from a Lead (Copy-from) account to Follower (Send-to) accounts.
Risk by Balance. Lot sizes are calculated based on the balance ratio between accounts.
Risk by Equity. Lot sizes are based on current equity instead of balance.
Lot Multiplier. A simple scaling method that multiplies every trade size by a fixed factor.
Fixed Lot. All copied trades are executed at a fixed predefined lot size, regardless of the master trade size.