Why can't i add someone to imessage

- Why can't i add someone to imessage group
- Why can't i add someone to imessage group chat
- Why can't i add someone to imessage gc
- Why can t i add someone to my imessage group chat
- Can i add someone to imessage group chat
- Can i add someone to imessage
- Can i add someone to an imessage thread
- Imessage needs to be enabled to send this message