"daughter" options?

[Bluefool]

Ok, I'm trying to set up an option so that if you select one option, the daughter option appears and you can select if if you want.

I've tried setting child types, setting one option as a link to the other and its various settings, and I'm not getting it. The second option never appears.

I also tried ripping of other data files (yes, its a habit now...), and still no luck.

Can someone point me yet again to the appropriate doc section?

And before I get flamed for it, yes I have read the documentation...all of it. However, I'm not a programmer and so most of it is out of context to me or just plain greek. Finding the answer in the docs means knowing exactly how to phrase the question, which I'm learnign but its still getting there.

And, thanks again for all the info people have posted below; it got me a huge leap in understanding, and it is adding up...slowly perhaps in my case .