You can change the ADT for an individual widget through its own configuration, but to configure the default ADT for all widgets of that type, you must go to System Settings. In the System Settings you can find a configuration for every widget in Liferay. Any widget that supports ADTs has a Display Style Group ID and a Display Style option.
Display Style Group ID: The Site ID where the ADT is located. For Global templates use 0 for the ID.
Display Style: The ADT’s template key.
To enter a Display Style, you first need the Template Key for the template
you want to use. To get the Template Key, go to the Application Display
Template list for a given Site and retrieve it from the ADT listing. Then
enter the display style as
For example, configure the Language Selector ADTs like this:
Open the Menu.
Using the Site Selector, select the Global site.
Go to Build → Application Display Templates
Find the Icon Language Selector Template and click on it.
Open Details and find the Template Key -
Now that you have the ID, you can change the template from System Settings.
Once you have the ID, go to the Control Panel → System Settings
Find Localization under the Platform heading and select Language Selector from the options on the left.
In the Display Style field, enter
Now any Language Selector widgets are added to a page use the new defaults. This doesn’t affect widgets already added to a page and configured.