I don't know what this entails exactly, i tried for a year to get an answer out of them whilst I appealed and failed and now I'm in support group so am still none the wiser. The only thing I do know is that it means you have to have monthly meetings with your advisor who will decide if you've been doing enough 'work related activity' and if not, then they take your WRA component off you (bout £26 p/w). I have no idea what they consider to be sufficient 'activity' or even what that means and I never got to interview stage as I wouldn't go due to my agoraphobia and the fact I was appealing. Then after 6 months, you will be reassessed.
If you have previously been on IB or you don't feel you have been assessed properly, I would advise you to try and get support group. This way, you can do training if you want but it's not compulsary. They stay on your back with medicals though, I've got another one soon only 6 months after the last even though I won my appeal only 2 weeks ago.
You have 30 days from the decision date to challenge the decision. If you decide not to, can you let me know what happens to you at interview as I would really like to know! Thanks, ALice