Thank you both for the reply.
I was not clear I believe: I am already CRI ME (Also FI, so I guess FI(A) SE/ME is the corrct term).
Now I also want to instruct towards the IR. Therefore I need the IRI-course. As far as I understand I need to do the IRI in ME to instruct IR in ME. Or would it be sufficiant to do the whole thing on SE? And still be able to instruct towards an IR in a ME, as I already are FI SE/ME?