Families with multiple users will need to create an account for each user. Accounts are per Scout, not per family.
Note: Multiple accounts can be created using the same email address but must have unique usernames.
For help registering, please see How do I Register for a Scout Account?
To add multiple contacts for Multi Factor Authentication, please see How Can I Add Additional Contacts for Multi-Factor Authentication (MFA)?
You can log in to more than one account in the Trail’s End App and switch between users. Please see How Do I Log In to More Than One Scout at a Time?