Anyone facing trouble with Module Service Cloud Macros - Create and Run Macros?

I can't see Email Action on page layout. I got the same error of this link: https://help.salesforce.com/articleView?id=Why-do-I-receive-an-error-running-the-Macro-saying-that-the-action-is-not-available&type=1&language=en_US

I found users claiming about similar question that seems to be the same issue on this link: https://success.salesforce.com/ideaView?id=08730000000l1tPAAQ&sort=2
 

Hello

I am stuck on the  Improve your Classic App by Moving to Lightning Experience module
It refers to Dreamhouse Classic app
Where is it to be found ? several project relies on this but I only have DreamHouse app, not the Classic one
thanks