HTC Tilt 2 User Manual page 63

To manage the conference call in portrait view
Tap a participant from the conference call and then tap one of these buttons:
Talk in private to this
participant only and
put the others in the
conference call on hold.
To swap between a private
call and the conference
call, tap the dim area that
shows "On Hold" or tap
Menu > Swap.
View contact
details.
Using Phone Features 6
End the call with
this participant.