Accept or reject an invitation
In the standby mode, when you are connected to the IM service and you
receive a new invitation, New invitation received is displayed. To read
it, select Read. If more than one invitation is received, scroll to the
invitation you want, and select Open. To join the private group
conversation, select Accept, and enter the screen name you want to use
as your nickname. To reject or delete the invitation, select Options >
Reject or Delete.