How to get two products from different sections by filter in Bitrix?

Question

1C-Bitrix

Please help!
There are several sections on the site with goods. Take for example two, papers and pens.
It is necessary that the user, choosing the paper parameters in the filter, then the pen parameters, receive two goods, one is paper, the second is a pen. How to do it?
Really only if additional. the property to bind paper, that all pens are suitable for it, and pens, through additional. property that fits all paper?
I tried to make it a simple filter, deduced some of the properties that filters one section, the second filter that filters another section, but the filters overwritten themselves, although they have different names. and it seems to me that this solution is a little crazy.
Oh please help!

Answer 1

In Bitrix, the smart filter works on the current category and nested ones.
If your paper and pens are included in some category, then everything will work on it without additional. tricks.
if you enter the Paper section, and the pens are in the next one, then only through the add. properties bind paper with pens and PLUS rewrite smart filter alas and ah.
For starters, read https://dev.1c-bitrix.ru/community/blogs/product_f...
The market is full of ready-made filters, though for grannies, but this is Bitrix...