If your organization has contracted the Whistleblower, you will be able to configure it with your corporate image and your own texts.
Access the Whistleblower by going to Settings > Apps > Whistleblower> Configure:
Once you enter the Configuration, you will be able to see the portals that you have activated (you can have as many as you need, for different types of users, for example).
From there, you can change the corporate colors, the default language, the texts that will appear in each language you select, etc.