Yes, you can setup Headwind MDM in multi-tenant mode.
To enable this feature, you need to run a PostgreSQL command in the database after the installation of Headwind MDM web panel.
# su postgres
# psql hmdm
psql> UPDATE customers SET master=true WHERE id=1;
psql> UPDATE users SET userroleid=1 WHERE id=1;
This must enable multi-tenancy for admin user.
To create new accounts, click the admin name in the top right corner, and select "Master panel". You are able to manage accounts and log in as their users.