Enable Business Single-Sign on for Guide

Feature Request Summary: 

Zendesk should enable business Single-Sign on for Guide as they do for the Support product.

Description/Use Cases: 

Right now our agents login to our Sharepoint Homepage using their Microsoft credentials. As we deal with multiple Help Centre's (both for customers as internal) our agents first need to Authenticate with Zendesk Support before they can use the buttons we've created in Sharepoint which takes them to the specific Help Centre.

Business impact of limitation or missing feature:

It's annoying for our (light) agents to first connect with Zendesk Support before the button links actual takes them to the right place. This especially account for our Light Agents as they don't work with tickets every day.

Other necessary information or resources

Perhaps someone has a workaround for this which might work as well?