Hello Raji,

There was a similar thread on the community about this same question. It can provide some more background on trying to implement what you are looking for. Link is below:

http://community.k2.com/t5/K2-blackpearl/AD-Users-and-Groups-in-one-Picker-Control/m-p/76340#M22140

A word of caution as discussed in this thread, if you have a large AD this control might take an extended period of time to resolve since it would be looking for groups and users. Larger the AD longer it will take to look through the entire directory.

-Evan