Welcome! These pages explain how to work with X-Sitter, step by step. They are written for **logisticians** (you run the warehouse) and for their **clients** (you store goods at a logistician and send orders).

## Where to start

| You want to … | Start here |
|---|---|
| log in for the first time | [First login](/account/first-login.md) |
| see and process your orders | [Order overview](/orders/order-overview.md) |
| maintain your articles | [Article overview](/products/article-overview.md) |
| set up a new warehouse | [Warehouses](/warehouse-setup/warehouses.md) |
| announce and receive goods | [Advance notices](/inbound/advance-notices.md) |
| pick, pack and ship | [Create a picklist](/outbound/create-picklist.md) |
| bill your clients | [Client billing](/billing/client-billing.md) |
| connect your own system | [API overview](/api/overview.md) |

## Logistician and client

X-Sitter works with two kinds of companies:

- The **logistician** (main tenant) runs one or more warehouses, manages employees, stock, picking, packing and shipping, and bills its clients.
- A **client** (sub-tenant) belongs to a logistician. Clients see their own orders, articles and stock, announce deliveries and handle returns.

What you see in the menu depends on your company and on the permissions your administrator has given your user. If a menu item described here is missing, ask your company's administrator.

!!!
Many screenshots in this documentation show the German interface. Labels are given in English with the German original in brackets, e.g. **Create picklist** (*Pickliste erstellen*). You can switch the language at any time with the flag in the top bar.
!!!