Secure portlet problems..

[Vignette Beginner]

Hi,

Actually i am not really a vignette developer. However I have an short
term assignment which i had some problems to complete. Our client asks
some of the pages to be secure. First I added security to portlets
which work fine, second i created secondary pages which have the
option to enable security.
But right now when I add a new page to navigation, I can not make it
include/inherit the secondary page and if just add the secure portlet
then it complains the main url is not secure. If I turn all portal to
secure then everything works fine but everything is under https which
our client does not accept.
I check the docs, about secondary pages, grids etc, but couldnt find a
way through them, vignette connect also doesn't have anything. I'm
sure it must be something simple which i couldnt manage to find..
Can anyone help on the issue?