After you Publish your Google Site...
Go to the NPS Home page and click on Login Links.
In the list, click on Password Reset.
Login to Rapid Identity with your username and password.
On the left, click on Profile.
In the center, click on Edit Profile.
Paste in the [public] address/URL to your website. It will look something like this: https://sites.google.com/norman.k12.ok.us/msnelson/home
Click Save. It will take about 24 hours for the link to appear in the NPS Emails/Roster Search.