You can create relationships on a business' desktop site when creating a new account:
1. Create a new account
2.Click "Add Family Member"
3. Type in required information
If you already have an account:
1. Login to your account
2.Select "MY INFO"
3. Click "Add Family Member"
If you are interested in paying for a family member on the app, please reference "Can I add a family member to my mobile account?"