The L4 Trading System allows a user (e.g. money manager) to trade multiple managed accounts by trading one consolidated account called "Master Account", composed of total equity of all sub-accounts. The back office handles the proportional accounting so that every sub-account gets its share of gains or losses. Allocation of the gain / loss on each trade is in direct proportion to the amount of equity in each account after the trade is closed.

Master Account is outlined with the crown in accounts "Fin Info" table.

Trader can trade from either master or sub- accounts, though, can't have positions, opened from master and sub- accounts simultaneously.

To trade from master account, one should switch to it (make current) in accounts "Fin Info" table