Hello and welcome to the forums,
The CKEditor can be enabled in pretty much every field, but we recommend to only use them in fields of type 'long text'.
To enable CKEditor, all you need to do is to set QFfield callback and display callback on this field. You can do that using the Administration panel or you can add necessary code in installation file of your module.
In admin, go through Menu->Administrator->Record Browser->select the record set->switch to Manage Fields->edit field you want to have CKEditor enabled on and use these two strings:
QFfield callback:
Libs_CKEditorCommon::QFfield_cb
Display callback:
Libs_CKEditorCommon::display_cb
And from here on the field will be edited using CKEditor.
If you want to add CKEditor on the installation level, please follow instructions you can find here:
http://www.epesi.org/index.php?title=Ut ... Properties
Kind regards,
Arek