Where is "Send a text message"?

[jpfuntne]

I was intrigued by the What's new pop-up I saw when Webex started on my laptop this morning, especially the "Send a text message" feature.  I updated the app so I'm now at version 43.1.0.24716 on Windows and am trying to follow the steps in "Send a text message" in the Webex help center but I can't find the menu item.

I'm not even 100% sure what they mean when they say: . I think they mean:

but I don't see the menu item:

What am I missing?  Has anyone gotten text messages to a colleague's mobile number to work?

[dtibbe]

The Business Texting feature is for Webex Callings with Cisco CCP in NA/Canada only. Do you have both? Probably it is not available due to these constraints 

[jpfuntne]

In Webex App | Text messages one of the requirements it lists is Only available for Webex Calling with Cisco Calling Plans.  Maybe that's the issue.  I don't know anyone I would want to text who would be on a Cisco calling plan so maybe I can't make use of the feature.