The software is designed to make it easy to manage multiple employers.
There is no limit to the number of employers that you can add.
You can add a new employer by either
The employer will be created and you will be the owner of the employer and have the admin role.
If you've configured employer defaults, such as which users should automatically have access to new employer, then these will be applied.
Want to create multiple employers at once? Use the Employer CSV Import.