Google Posts includes 'call Now' button

The new choice inside Google My Business gives you a chance to incorporate your telephone number as a suggestion to take action.

Google My Business has added the capacity for organizations to include a "call Now" catch to their Google Posts. Previously, the invitation to take action choices on the Google Posts for the “What’s New” box included “book,” “order online,” “buy,” “learn more,” “sign up” and “get offer.” Now Google has another alternative that rundowns the business' telephone number. 

Here is a screen shot:

When I tried the "call now" button, it put in my business' sans toll 800 telephone number. I didn't be able to transform it to an alternate number. 

shared a GIF of how the catch looks in the query items: