If you set up identification conditions on the first page of the document that are sufficiently specific, such that no other pages in the document will satisfy them, then Quick Fields will do exactly what you're asking for (unidentified pages are added to the same document as the previously identified page).
If your documents are always the same length, you can instead use the Last Page Identification condition to "Limit documents to __ pages".
I'm not sure what you mean by "I do not want quickfields to see...". Do you mean you don't want it to spend time evaluating conditions on them? Or don't want it to run Pre-Classification processes on them? Or...?
Note that there are also some other settings that can affect this behavior, such as "Keep each file as a separate document".
For more information about how Quick Fields performs document identification, I recommend the online documentation.