When signing up businesses you will need them to do this via your unique team page URL. To get this takes a couple of steps but once you have it it will be easy to send to people so they can sign up through you.
- Click the drop down menu in the top right
- Click my account
- In the menu on the left side click 'Teams'
- Then click 'View Page'
In the address bar at the top it will now have your Unique team URL.
You can now send this URL to the business you are signing up. When they click on it it will take them through the registration process and once registered will give them access to all of your promoters.