The organization menu displays the current organization (company, association, institution) for which the accounting is maintained:

Edit [more]
Here you can edit the current organization (name and logo).

Locations [more]
Here you manage one or more locations (addresses, logos, UID, bank connections, etc.) of the organization. Locations are used for the sender address on Order documents, but also to locate inventory (e.g. warehouses).

Users & roles [more]
Here you can manage the users that have access to this organization. There are different roles for a user (administrator, guest, etc.). You can also define your own roles.

Backups [more]
Here you can manage and restore backups of the current organization.

Organizations
Here is a list of all organizations that the currently logged in user has access to. You can switch to an organization by clicking on it here.

Manage [more]
Here you can manage all of your organizations, i.e. create new organizations, edit existing ones, copy or delete them.