How can my users select the slot acording to your country?

How can my users select the slot acording to your country? because my users are in different countries. Thanks

Could you please explain your question in details ? Which component do you mean ?

If you mean different timezones, just add the
scheduler.config.server_utc = true;
In such case all interaction between server and browser will be done with UTC dates, which will be converted to the local time of the user directly in browser.