You asked for it and now we have it!
Chrome and FireFox browsers now have the blue ClassLink One-Click Extension.
Your ClassLink Management Console (CMC) has been updated to accommodate the enhanced SSO functionality which includes multi-step authentication support. You will notice in your Extension Connectors a new field at the bottom called Advanced SSO that allows input of JSON, which is a lightweight, understandable setup for structuring data.
The new extension only works on Chrome and Firefox, and Edge web browsers.
By default, the Advanced SSO switch is turned off.
To have a better understanding how JSON works in the Advanced SSO Extension Connector, click Here!
Here is an example of Office 365 that uses Advanced SSO Extension Connector:
You can also view Office 365 Extension Connector in your CMC > Single Sign-On > Extension Connectors > Search New Office 365 > Click Copy > Click Edit > You can scroll down and increase the text box area to properly view the code.