The first thing the manager should do is create a user. They should create themselves. They will create their family members later. They (and all users) will need to verify their email address. You will get an email from the system. Click on the link and verify your email address. Make sure you check your spam folder for the email as it may get trapped in there.
If you click on the forgot password link and do not get an email, you most likely do not have a login or user set up in this system. Keep in mind this is new. Most of you do not exist in the system.