Taking online tests with temporary disability

Hi All,

I have already scheduled my next exam. Unfortunately I injured my knee and just had my ACL reconstruction surgery. I am trying to keep my current exam appointment. The doctor recommends that I should wear the brace and keep my leg elevated. It is my understanding that the brace itself is a pre-approved medical device that I don't need to submit an application for that. But does anyone know if I am allow to have another chair/stool so I can elevate my leg, and do I need to submit an application for that?

Thank you,