[Q]Timesharing user accounts using xposed framework topic

Guys I am currently working on a university project in Android.The objective is to create a rudimentary timesharing implementation on Android platform.The basic idea is to create multiple user accounts using the Kitkat API and switch them when their alloted timeslice expires.Creating user accounts may not be difficult but I have no clue as to how to switch them.I'm pretty much a noob in Xposed programming ,so any help is appreciated.

Thanks in advance...