Well these are devices with a bazillion settings and can be used in many ways. I've lost count how many routers I've configured as a WAP but that wasn't your question.
I think the problem is that while I could answer how to do that in a paragraph the paragraph might only make sense to those that have been networking for about a year. I know I didn't know how to do this years ago.
So there it is. A technical product that does not come with full documentation for reasons we know but rarely write about. That is, head to a brick and mortar book store and marvel at the number of books on networking. To explain how this works may take a few books.
After a few years, I believe I actually got my two Netgear WGT624v4 routers to act as base-station and repeater. Nice. Seems that amidst their "help" people, online forum, site documentation, and even packed in literature, they all have differing ideas as to how to make it happen. And the sometimes broken-English doesn't help either, just sayin'.
Okay, great, so, calling any Netgear guru...or anyone else that may have a clue!
Why is it that now I have three networks showing when I scan for wireless networks?! There's my base-station "Chunky Puffs," my repeater (which somehow the procedure of making it a repeater decided on its own to call it) "Chunk," and then my plain ol' "Netgear" (which wasn't there before this procedure and can't be accessed period). So, is that all normal?