Below are some of the imposition layouts that are supported by IDImposer.
The column on the left represents the front sides of the sheets; the column on the right represents the back sides.
IDImposer is based on a flexible system of imposition definition files. If one of the built-in files doesn’t meet your requirements, you can define your own. (Look in the PageSequences folder.)
By the way, it’s easy to create test files for exploring the different imposition types and options. Just create a blank InDesign document of whatever dimensions you like, save it, and run the MakeTestDoc.jsx file in the IDImposer RESOURCES/HelperScripts folder. (Run it from the InDesign Scripts panel.) See the Quick Start page.