Registration for both groups from single group nov20 ca inter

Let me explain you..

I have cleared my foundation exams in nov18 

Then i registered for single group only to give papers in nov19 ca inter

But i failed..

Then i paid for the exam fees for the next attempt may20 again for single group only

But now for nov20 i want to give both the groups

And now i want to register for both groups 

So can you please suggest what can i do