I can't think of a separate guide, but if you look at the guide relevant to the benefit you are claiming, it will take you through the form-filling process.
However, the thing to beware of with tick-boxes is that if you simply tick yes, no, or sometimes, you may not be giving them all the relevant information. By sometimes, you may mean almost all of the time, but someone reading it may interpret it as a little bit of the time.
Personally, I'm an annotater by inclination. If my answer doesn't fit the alternative answers, I say so.
It's also worth considering affixing extra pages of your own with any extra information you want to give the DWP about anything you are applying for. If they don't have the information, they can't take it into account. It's worked for me and for others.
