For a copytrading, add the possibility for a multiplier of the "% of Master balance" option
For example with a 1.5x multiplier:
Master Trader balance: 1000 USDT
Copier balance: 3000 USDT
Master order: 20 USDT (2% of balance)
Copier order: 3000 x 2% x 1.5 (multiplier) = 90 USDT