You can customize the sound alert for post notifications in the Breaking News Chat and Small Cap Rockets Chat. To change the sound alert, follow these steps:

1. Locate the wrench icon situated in the top left corner of the platform.
2. Click on the wrench icon to access the settings menu.
3. Look for the options labeled "Breaking News Sound Selection" or "Small Cap Rockets Sound Selection."
4. Click on the respective option to choose your preferred sound alert for the corresponding chat.