Check out the given walk-through on how to map multiple languages with Designer.
Select a saved dashboard using the Designer plugin.
Access the Title properties of the dashboard and make sure that the title description is provided in the “{}” brackets (if not then modify it accordingly)
Open the Dashboard Properties Panel and configure the Language Properties, as shown below:
Enable the Language Mapping by using a checkmark in the given box.
Use a checkmark in the given box to Hide the Curly Braces.
Click on the icon to select a mapping option.
The Language Mapping Selection window opens.
Select a language using the Mapping List drop-down menu.
Click the Save option.
Open the Script window for Component.
Make sure that the desired language’s name is mentioned in the script.
Click the Preview icon.
The dashboard title and other descriptions get translated into the selected language.