integrated authentication workings

I don't seem to understand the behaviour of the windows integrated authentication.
For my understanding: When I enable in the Users e-space Windows Integrated Authentication, I switch on WIM for all applications, right? But when I leave this system wide setting 'OFF', can I still use the Integrated Authentication on WebFlow and/or WebPage level?
I was testing this and with WIM ON , I can not disable it on WebFlow level.

Cheers,

Patrice

I have read it, but still not clear to me:
When I don't set the global WIM in the Users module, can I still use IA on Webflows/WebPages?
I ask this because I tried a few settings and I could NOT get IA working on Webflow/Page with setting 'yes' AND global WIM = OFF

Not without doing a lot of custom development. No.