[Synergy] How to modify configuration file

Modify following configuration file
/home/happy/.config/Synergy/Synergy.conf

[General]
autoConfig=false
autoConfigPrompted=true
configFile=/home/happy/synergy.conf
cryptoEnabled=false
cryptoPass=
elevateMode=false
groupClientChecked=true
groupServerChecked=false
interface=
language=en
logFilename=/var/log/synergy.log
logLevel=3
logToFile=false
port=24800
screenName=happy-B400AV
serverHostname=111.2.1.126
startedBefore=true
useExternalConfig=false
useInternalConfig=true
wizardLastRun=3

[internalConfig]
hasHeartbeat=false
hasSwitchDelay=false
hasSwitchDoubleTap=false
heartbeat=5000
hotkeys\size=0
ignoreAutoConfigClient=false
numColumns=5
numRows=3
relativeMouseMoves=false
screenSaverSync=true
screens\1\name=
screens\10\name=
screens\11\name=
screens\12\name=
screens\13\name=
screens\14\name=
screens\15\name=
screens\2\name=
screens\3\name=
screens\4\name=
screens\5\name=
screens\6\name=
screens\7\name=
screens\8\name=
screens\9\name=
screens\size=15
switchCornerArray\1\switchCorner=false
switchCornerArray\2\switchCorner=false
switchCornerArray\3\switchCorner=false
switchCornerArray\4\switchCorner=false
switchCornerArray\size=4
switchCornerSize=0
switchDelay=250
switchDoubleTap=250
win32KeepForeground=false