In order to manage all your companies from one login, simply add the same user account to all the companies. Please refer to the below guide on how to add a user account on Atmos:
1. Open your browser and login to each company with your admin account.
2. Navigate to the user settings by clicking on the settings icon in the navigation bar towards the left of the screen.
3. Click on the user column at the top in order to add the user.
4. Click the 'Add New User' button.
5. A new window will appear asking you for the relevant user information. Complete the entries and click the update button. The form will auto populate the user information if the user is already loaded on the system.