When using the “Fixed Units” method, whatever the Master trade size is, each trade placed on the Slave account will use the defined value as the trade size, no matter the Equity, Balance or Free Margin of both Slave and Master accounts.
100 000 units represent the equivalent of 1 standard lot with a notional value of 100 000 USD, so for example if you set the Fixed Units to 20 000 this is equivalent to 0.2 standard lot, you can find more examples in the next section.
The “Fixed Units” value could be any positive or negative value, the system will round up to the closest volume incremental step for the traded instrument. A negative value will reverse the order side.
If the minimum order size allowed by your broker for a specific symbol is bigger than the lot size computed, the Trade Copier copies the minimum trade size. In this particular case, the system always tries to copy the trade with the minimum allowed value.