What equipment do I need for the Alcoholism Program?

I want to start the alcoholism program for my prisoners, but as you can see in the screenshot below it is flashing "NO EQUIPMENT". However, as far as I can tell I have everything I need. I have a psychiatrist, a common room and lots of chairs. What else do I need? (If the image is too small open it in a new tab, the full resolution is 1920x1080).
Best Answer
Looking at my save games I think the issue may be with the type of chairs you are using. In my common rooms the alcoholics get nice comfy chairs (labelled in games as Sofa).
As you can see above there are 8 comfy chairs and 8 slots in the programs window (despite the addition of three standard chairs in the room).
When the session runs, the prisoners sit in the comfortable chairs:
Interestingly my experience contradicts that of the wiki articles - it may be worth trying yourself, however.
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Alcohol Use Disorder - A New Approach
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Answer 2
In my case I just needed a minimum amount of chairs (I think 8, could also be 6, but I haven't tried it). And I used the common chairs, not the "comfortable" ones.
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