The foreign exchange market works through financial institutions and operates on several levels. Behind the scenes, banks turn to a smaller number of financial firms known as "dealers", who are involved in large quantities of foreign exchange trading. Most foreign exchange dealers are banks, so this behind-the-scenes market is sometimes called the "interbank market" (although a few insurance companies and other kinds of financial firms are involved). Trades between foreign exchange dealers can be very large, involving hundreds of millions of dollars. Because of the sovereignty issue when involving two currencies, Forex has little (if any) supervisory entity regulating its actions.
Believe it or not, this question does come up from time to time, especially from anyone unfamiliar with the foreign exchange market. Unlike the futures markets, there is no central governing body nor any arbitration panels or clearing houses that control the foreign exchange market. All trade is conducted through credit agreements between individual members.
One has to adopt one or many strategies in order to minimise losses and maximise profits. As market conditions vary from day to day, so should a day trader's strategy. A successful day trader has to come up with a new strategy almost every other day, or at least adjust their existing strategy to the new market conditions. In order to day trade Forex successfully, a creative mind is needed.
Unless you understand the code it's written in, you're probably not going to be able to adapt your EA to work with those changes. If you are one of the many traders who believe that an EA would outperform the market, then perhaps you should give it a try with the MetaTrader Supreme Edition plugin. And perhaps best of all, we offer EAs free of charge for traders!

(The leverage shown in Trades 2 and 3 is available for Professional clients only. A Professional client is a client who possesses the experience, knowledge and expertise to make their own investment decisions and properly assess the risks that these incur. In order to be considered to be Professional client, the client must comply with MiFID ll 2014/65/EU Annex ll requirements.)
Spot for most currencies is two business days; the major exception is the U.S. dollar versus the Canadian dollar, which settles on the next business day. Other pairs settle in two business days. During periods that have multiple holidays, such as Easter or Christmas, spot transactions can take as long as six days to settle. The price is established on the trade date, but money is exchanged on the value date.

More specifically, the spot market is where currencies are bought and sold according to the current price. That price, determined by supply and demand, is a reflection of many things, including current interest rates, economic performance, sentiment towards ongoing political situations (both locally and internationally), as well as the perception of the future performance of one currency against another. When a deal is finalized, this is known as a "spot deal". It is a bilateral transaction by which one party delivers an agreed-upon currency amount to the counter party and receives a specified amount of another currency at the agreed-upon exchange rate value. After a position is closed, the settlement is in cash. Although the spot market is commonly known as one that deals with transactions in the present (rather than the future), these trades actually take two days for settlement.