LG G5400 User Manual page 194

2-7 Putting a Member of a Multiparty Call on Hold
To place one selected caller (whose number is currently displayed
on-screen) of a multiparty call on hold, select <[Options] then
Multiparty/Exclude.
2-8 A Private Call in a Multiparty Call
To have a private call with one caller of a multiparty call, display the
number of the caller you wish to talk to on the screen, then select
<[Options] and Multiparty/Private to put all the other callers on
hold.
2-9 Ending a Multiparty Call
The currently displayed caller of a multiparty call can be
disconnected by pressing the E [End] key. To end a multiparty
call, press <[Options] then select Multiparty/End multiparty.
Selecting <[Options] then Multiparty/End all, will end all the
active and held calls.
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