You can also configure language of your choice by clicking on Configure Languages button available on Configurations page.
On configure language page, select the language from dropdown that you wish to configure messages for.
Here, user needs to add translations themselves for the messages in the language of their choice.
Click on save button to save the language translations.
Note: For configuring languages, the user first needs to manage language settings from CRM. Languages that are selected in CRM can be configured for the calendar.