Ca final 1 group cleared, conversion for group 2?

Hello there,

My CA final group 1 was cleared in May,17 attempt. Group 2 couldn't clear in May,18. I want to covert in new syllabus for May,18. Is anyone here who've opted for this or someone who can give clarity about the procedure.

I've logged in on the portal for conversion but there is no option to apply for the same. However in notification it's written that in such a case one can convert.

Please guide