Collar product is a structured product which is done generaly for hedging purposes. Instead of doing a simple forward contract hedger has a flexibility to buy/sell a foreign currency from a price range. The price range allows the hedger to speculate the market according to his market view rather than fixing the price in forward.
When you click on any textbox this guide will explain how to fill that textbox. Just click on "Currency Pair" for example and see how to change the currency pairs.