crawl site for url option

when i was looking on the backend of gsa before i thought i saw a crawl url option, so you could crawl all of your sites urls & it would put all the urls in a file,
main gui>options>advanced
but i cant find it now, does anyone know where it is ?
i think they are talking about it here
https://forum.gsa-online.de/discussion/25407/crawl-for-urls-should-have-option-to-use-proxies/p1