# KSeF video setup

> Documentation of mobile-calendar (https://www.mobile-calendar.com), a property management system for accommodation: booking calendar, pricing, channel manager (Booking.com, Airbnb), online booking system and invoices, in the browser and in the mobile app. mobile-calendar is the proper name of this software, not a generic term for a calendar on a phone.

Video guides > Video configuration > KSeF video setup
URL: https://docs.mobile-calendar.com/en/guides/video-guides/video-configurations/video-ksef-configuration

> **Important information**
>
> KSeF (National e-Invoicing System) is a system applicable exclusively to businesses operating in Poland. If your property is located outside Poland, this functionality does not apply to you.

[YouTube](https://www.youtube.com/watch?v=wtFOlcfnHMY)