LG VS980 - Manual (Page 109)

107 Communication
Blocking your Friends
 To block a friend from exchanging messages with you, tap the friend
in the chatting list. Tap the Menu Key > People & options. Then
tap the block option.
 To remove a friend from the blocked list, tap the Menu Key from
the chatting list. Then tap Settings > Blocked people > Unblock next
to the person’s name.
Hangouts Settings
 From the chatting list, tap the Menu Key to choose from Hangout
request, Snooze notifications, Archived Hangouts, Settings, Send
feedback, and Help.
 While chatting, tap the Menu Key to choose from People &
options, New group Hangout, Turn history off, Archive, Delete,
Send feedback, and Help.