To set up Trade alerts in the Trader Workstation, right click on the symbol you wish to set the Alert for and left click on the "Create new Alert" bell icon in the right click menu. Click the "Advanced Settings..." button to create a Trade alert. On the "Create Condition" window, select Trade and then click Next. On the next screen you can enter an underlying and exchange and select an instrument type, or you can select ANY to create an alert for all trades. Click Finish once you have done this.
Under "Actions", choose the type of notification you wish to receive. You can use the Messages tab to send a message via email or SMS, or use the Audio tab to set up an audio alert. Finally, go down to the "Duration" section and set your duration preferences. Once complete, click Activate at the bottom of the window.
If you choose to have the alert sent via email or SMS you will need to configure your default method of receiving alerts. This is a one time process and is done through Client Portal. Once logged in select User menu (head and shoulders icon in the top right corner) followed by Settings then under User Settings and Communication select Alert Notification.