This information refers to the German market!
Every xentral instance needs at least one active user license. If you want to add additional user licenses, you can easily do so in your instance. To do so, go to App Center > Buy license (tab next to overview; until version 21.1.: My Area > License). Then click on the green plus icon:
The user will be automatically added to your monthly subscription and you can create a new user account. For a reduction of users please contact us via support ticket system.
You can find more information in our manual:
Assign user rights (Workflow)