Impose - cannot quite get what I want

Tools
2009-01-08
2013-04-29
  • I am trying to get Impose to put five 3x5 images on a letter size page.

    With the page in portrait orientation, I want a column of 3 cards in landscape, then I want a second column of 2 cards in portrait

    Every combination I try resizes the original 3x5 pages.

    Any clues for this clueless one ?