Changing a decision to place client in WRAG

Due to see a client next week and just needed some advice on best way to proceed…

The info I have at the mo is client passed LCFWA in January and placed in WRAG. She had spinal surgery in March.

She wants advice on going into the support group (not sure till next week if she is on CBESA or IR ).

Assuming she satisfied test to get into SG in Jan, what is the best way to try to alter the decision (late appeal, review etc)?

If she only satisfied test after the surgery in March, is it just a straightforward (late) supersession request?

Many thanks