Perhaps I'm missing the question, but I think you can humanize the notes by clicking Functions>Transform>Humanize from within the piano-roll pane menu. The transform window will appear and you can set your own preferences for the amount it moves by fooling with the numbers in the "position" column.
The (. . . 10) figure being manipulated to say, (. 1 1 0) can yield some pretty wild results. To read this correctly, the first would be a +/- random shift of up to 10 ticks, whereas the second example would randomly shift your note position by up to one beat and a subdivision. (Bar Beat Subdivision Ticks) So I'd say tailor that entry in the transform window to your liking and see what you get.
Humanizing position by any more than 75-100 ticks or so within the transform window really makes the music sound drunk, unless of course that's what you want. More than that and you start getting into Aleatoric-styled music, which can be quite fun under the correct circumstances.
Hope this is what you were after!