How to take certification exams ?

I have bought the CATIA 3DEXPERIENCE for students for 1 year .It was mentioned that 3 certification exams are included .Can someone please tell me how to give these exams ?

Edu ​​​​​​​3DEXPERIENCE CATIA ​​​​​​​ Student Offers Eduspace​​​​​​​​​​​​​​Certification ​​​​​​​