The ability to host or participate in a group iChat conference (a multiperson chat, such as 4-way) is based on these factors and requirements: Your computer's capabilities Buddy's computer's capabilities Available bandwidth A built-in or external compatible microphone or video camera, for audio or video chats, respectivelyIf someone in your buddy list doesn't meet the requirements for participating in a group chat, they won't appear in your Buddy List with a multi-way icon. Similarly, if your computer and bandwidth do not meet the requirements to participate in a multi-way conference, you will not appear in others' Buddy Lists as such.