To use your free trades, simply place an order for an ASX holding and have it filled. If a free trade is available no brokerage fee will be charged when the order is filled.
How are free trades applied?
Brokerage is charged when your order is filled. Once your order is filled and comes off the market, if a free trade is available it will be consumed and you will not be charged brokerage.
For example, if you have 3 free trades and 10 trades in the market, regardless of when you placed the order, it's the orders that are filled first that will use your free trades. The remaining 7 orders will be charged $9.50 when filled.
If an order does not fill at all, the brokerage will not be charged nor will any free trades be consumed.