1)

Go to app launcher

2)

Click the gear icon of the app you want to configure

3)

Select the checkbox to enable the branding settings for this application

4)

You can make changes here and those settings will override the org level settings

If you click on "Done," you will exit the Application settings. If you want to configure other options, you should do that before exiting

5)

From here, you can add domains for the selected environments for this application

6)

Like the Branding section, you have to select the checkbox to enable application-level widget settings

7)

After configuring for Steps, click "Done" to save your settings