Once Currency is set up, players can begin tracking their party and personal wealth. Currency will convert automatically into the correct denominations. If you add, for example, 253 silver to your player wealth, it will convert it to 25 gold and 3 silver. This is because your wealth is actually stored in Chronica as a single whole number.
There have been some requests to keep entered values as-is to allow players to carry (for example) 2000 copper. This is something we are looking into, but we have no set date for its completion.