If you want to have different options depending on user groups (e.g. sales and support or you have locations in different countries), you can install multiple Call Center Adapters.
The same applies to languages. The standard fields are automatically displayed in the user language. If you need to translate the custom fields, e.g. in the Call Wrap Up, just make an own adapter for each language.
Click on edit and rename the fields: Internal Name and Display Name.
Click on the button Clone and make different settings.