The Maps tab of the Copier Settings allows you setup symbol maps that match symbol naming conventions across brokers.
Not all brokers use the same naming conventions for symbols, in particular commodities and indexes. A typical example of this is GOLD. One broker may quote GOLD as GOLD but another broker quotes it as XAUUSD.
If there is a difference between your Lead and Follower accounts naming, you have to manually define the relationship between the symbols or the trade copier will ignore the trades.
To create a symbol map you need to select each version of the symbol from the Lead and Follower accounts list and click create map. Once created it will be listed in the table.
Symbol maps can be deleted at any time by clicking the red trash can.