This functionality makes it possible for you to be notified of signals or events that occur. When you activate (or deactivate) the Enable Sound Alerts option, it will be applied to the entire watch list or list chart group.
To assign a sound to specific entry signals, select Setup Escort -> Parameter tab-> Choose entry escort from the list-> SignalSound.
Please find details here
You can also customize sound settings not only for specific indicators but also for the Analyzer Escort columns.
Example. Indicators
Right click within the scanner/list chart group to access the context menu, then select the Edit columns option.
For indicators such as Bollinger bands you can set the sound in the special section. The image below shows how you can manage different crossovers between the price and the indicator.