How to add/remove a user from a Private Message?
Adding/Removing users from an existing private message is easy!
Just go to to an existing Private Message then click Edit Recipients.
Then input the name of the user that you want to add on that Private message and click Save.
To Remove a user,
Just click Edit Recipients then click the "X" button that corresponds to the name of that user that you want to be removed.
And that's it! You're done!