Deveo Companies are logical containers (a.k.a. namespace) that isolate various business units, subcontractors, or branches within an organization.
Assuming Deveo has been bootstrapped, by default there should be at least one company. To add more companies, navigate to /admin of the Deveo installation, login with the administrator account, and click "Companies".
To create a new company, add the company title, a short name (unique identifier), and enter the details of the first Company Admin.