Integration with Zendesk

I am looking at this.

https://auth0.com/docs/tutorials/single-sign-on-with-zendesk-using-jwt#2-implement-a-rule-to-create-a-jwt-for-zendesk

and this

https://help.zendesk.com/hc/en-us/articles/229489588

The link that you have shared above is only available to zendesk users on the professional plan