4 up - Work and Turn Imposition?

I've noticed that there is only 8-up saddlestitch and perfect bound imposition available.

I normally work with a 4 up imposition where i have to do it manually...

Plate sizes ranges from 21.654" * 25.591" to 24" * 36".

Also the image should be on 2.25" from the right side of the plate and centered vertically. 0.25" space vertically between the center of the spread and registration marks 0.25" * 0.25" in size.

Sometimes I have to use third party software to achieve a perfect 4 up imposition when I have a document with more than 50 pages.

Is there any way I can add the 4 up imposition feature?

I've uploaded a file to show what I mean. Red Guidelines indicte bleed areas.

Imposition.cdr