ESA working group

Hi I'm New on here and have been living with being epileptic for 18 years following brain surgery . It's a daily battle that many people do not see. It ruined my career as a nurse and lost me my home and friends but we have to make the best of our cards although the support from benefits etc is becoming more of a problem with cut backs etc. I had an ESA interview last week and have been put on the working group so I'm wondering what it's all about ?