There are several ways of configurating TinyMCE. One way is to do it on the property itself (admin -> page types -> Edit Custom Property Types -> XHTML string (>255)). Or you could do it on a page type (admin -> page types -> YOUR PAGE TYPE -> YOUR PAGE PROPERTY).
You can even configure it via code in your templates. This scenario you would use when you are using the editor on the page itself.
Try to change the editor on a specific page type first and see if that works.
Once knowing where to drag-n-drop the buttons things were really easy =)
I'm having trouble configuring the editor to enable "Right to left" as a button for the tinymce editor.
I've configured EPi to use the button but it still doesn't appear
Under the Admin configuration of tinymce there is a section called "TinyMCE buttons" where I have enabled Direction Right to Left.
But then under the "Editor" section there is no check box for it.