Just to clarify, what you mean by a report, do you mean a particular view (either worksheet or dashboard) on your Tableau Server?
If so, when you are on the view you wish to subscribe to, you should see on the menu bar at the top of the data view, a menu bar that has the word 'subscribe'. If you click on that, you get the choice half way down the next dialogue box to select whether you want to subscribe to the 'Entire Workbook' or 'This View' under the 'Include' option.
Hope that answers your questions,
thank you for your answer.
I mean a particular view (either worksheet).
I want to select not the entire workbook, but more than one views.
As far as I'm aware, you would need to pick individual views and subscribe to each separately.
Yes that's correct