> For the complete documentation index, see [llms.txt](https://hotelizer.gitbook.io/manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hotelizer.gitbook.io/manual/en/menu/customers.md).

# Customers

- [Contacts](https://hotelizer.gitbook.io/manual/en/menu/customers/contacts.md): On this page you can see all the contacts that are registered in your system. You can search for a contact in any way, as well as by applying some filters
- [Businesses](https://hotelizer.gitbook.io/manual/en/menu/customers/businesses.md): On this page you see all the companies that are registered in your system. You can search for a company in any way, as well as by applying some filters
- [Guest in house](https://hotelizer.gitbook.io/manual/en/menu/customers/guests-in-house.md): This tab shows you the remaining customers who are currently in your accommodation. You can search or apply filters to search for a wider range of customers..
- [Guest history](https://hotelizer.gitbook.io/manual/en/menu/customers/guest-history.md)
- [Contact levels](https://hotelizer.gitbook.io/manual/en/menu/customers/contact-levels.md): In this page you can create contact levels for your contacts.
- [Phonebook](https://hotelizer.gitbook.io/manual/en/menu/customers/phone-book.md): This tab contains your phonebook.