Where can I find the Sent Emails menu in Evolution skin?

Yes you do. But you are looking at the wrong place.
You gave the Enhanced example, there you were looking at the e-mails page. So in Evo you should also be looking at the e-mails page, not on the "view users" list.

No you found the limit for the user, not for the e-mail addresses. If you want to limit the user, then you are in the right place.
To limit seperate email addresses, don't use admin but user level and look at e-mails.

Screenshot:
View attachment 6961