Not completely sure about the configuration you need.
I will share some tips I hope you find them useful:
After you insert universal CD , boot, type expert for custom installation. You can also hit F2 for more options,
Dont forget universal is a linux system, so It you would set partition like any other linux system.
I guess you can customize partitions using any disk management tool (linux fdisk has lots of advanced options, or you can choose any third party application)
After that, just choose partition to install Universal.