Thank you. I did find the Template folder.
We can see what this folder looks like by clicking on this icon
The question is now:
How do we find which of the Template we need to look into in order to personalize the text so that other tiki users can quickly *send a blog post to a list of users I registered myself in tiki-adminusers.php*
Here is a capture screen which shows the list of files in the Template folder of Tiki version 6: