Thanks for your reply, it's in the suggestion list when I type it's name in the institution text area to get the list of required docs.
Also, another question.
In the required documents list, WES only needs just my apostiled diploma and the transcript, while my diploma is in 3 languages, my transcript is in my native language only (non- English, French). Is it OK if I also send the notorized translation of my transcript? For my country there's no sealing requirement, so I want to add some supporting documents.