On your Vyte Page, you have the choice to set and hide your Language. If you turn on this setting, the person trying to reach you will see your booking page in your selected default language and won't be able to change it.
On the other hand, by not setting the language on your Vyte Page, the person trying to reach you will be able to select his/her preferred language (In order to turn off this setting, go to "My Vyte Page" ➡️ "Edit" ➡️ "Advanced settings" and scroll down).
When you create an event, Language and timezone for the event will default to yours but you can change them every time you create one.
On the Event page where invitees can vote for their preferences, Vyte is able to guess their favorite language and display it.
Regarding email notifications about the events
If your invitees also have a Vyte account, Vyte will send them the email in their preferred language (as set up on their Vyte account)
If they don't, the email will default to the language of the event (set by them when they book you, and by you if you invite them)