If you have been granted permission to Post messages on behalf of another user, follow these steps to Post your message:
- Click the other user’s name – for example, at the top of an IM you have with this user.
- This displays their profile along with a new option to Post on Behalf.
- Select Post on Behalf.
- Compose your message (keep in mind that this will be sent as if the other user typed it)
- Select Publish to Post the message to their Wall.