The fundamental and simple rule of profitable trading at financial markets is to buy cheaper and sell dearer. Thus, the entire trading activities at financial markets come to the successive operations performed to sell or buy securities. To do so, one has to open, modify, and close trade positions. Trade position is a market commitment (order), the number of bought or sold contracts for which no set-off transactions have been made. The entire trading in the terminal is implemented through trade positions. Client Terminal gives a large amount of opportunities in controlling and managing of trade positions. Trader gives instructions (orders), and brokerage company opens or closes a position. Managing of trade positions consists in: