Where could I find Edit Template in new interface of Blogger

Where is the Edit template in the New Interface of Blogger!
Blogger has just changed to new interface in content management. I think it is too easy for you to get well with how to publish new posts, tag post, ... but users who used to add code to blogger template like me won't find where is the edit template box to add/remove code to. What happen if we want to add facebook share button, add relate posts, ...
This post for newbie and who still couldn't find where is it like me!


First you go to Design like this:

Secondly, go to Template
After that scroll down to the end of Template page and you will see what you want to:

It is too easy, right.! Have a good day.