I was wondering whether someone can shed some light into whether discretionary order submission via IB API can be customized. The website speaks of order execution "pads". What does that mean? I want to create buttons that buy or sell a dollar value of shares of stocks rather than having to enter the absolute number shares to buy or sell. Or can I customize buttons to flatten an existing position of a given stock? Does any such feature exist in tickblaze? I know it's not made for discretionary trading but the website mentions discretionary trading capabilities...