Hi Jesus, quick question is it four pages or sheets. 4 pages = 1 sheet, 4 sheets is 16 pages. You can manually impose them simply.
Page #s Imposed 4 pages then 16 pages:
04 01
02 03
--------------
16 01
02 15
14 03
04 13
12 05
06 11
10 07
08 09
Cheers!
mnawij