1)User Registration - nic see
2)Adding a friend - Cheryl
3)Creating group - hf
4)Communicating in group - leo
5)Communicating in unicast (extension) - ben
6)Software Stability
7)Software Usability and HCI
8)Report - all 8.1)Organization and structure 8.2)System Design, Evaluation and Methods 8.3)User Manual