hi miyosa
welcome to scribus.
i guess you want to put some items outside of the margins.
this is of course very possible.
in scribus, the margins are only a reference.
on the other hand, of course, you cannot change the size of the page without changing the size of the paper you will be using...
scribus allows you to also do that, but i don't think that it is what you are looking for...
ciao
a.l.e