Hi, I've followed some guides on the forum and got to the following code to set my PiP up.
I'm using 1 computer running 2 clients.

Code:
// SET PIP CONFIGURATION// Usage: <SetPip BigWindowName LittleWindowName>
// This command is called by <Hotkey F1> which is defined below.
//-------------
<Command SetPip>
	<TargetWin %1%>
		<SetWinSize 1360 768>
		<SetWinPos 0 0>  // THIS IS ONLY HALF OF IT, YOU NEED THE NEXT PART, TOO
		<SetWinRegion 900 215 400 300> // THIS IS THE HOLE YOU NEED TO PUNCH IN THE MAIN WINDOW
		<SetForegroundWin>
	<TargetWin %2%>
		<SetWinSize 400 300>
		<SetWinPos  900 215>
		<SetForegroundWin>
		<UpdateWin>
	<TargetWin %1%>
		<SetForegroundWin>
		<UpdateWin>


//------------
// TOGGLE PIP CONFIG WITH HOTKEY
//------------
<Hotkey ScrollLockOn F1> // THIS IS WHERE YOU DEFINED F1
<Toggle>
<SetPip WoW1 WoW2>
<Toggle>
<SetPip WoW2 WoW1>
I'm having several issues, turning this functionality not usable:
1 - Small window does not sit properly on top of hole in main window
2 - Even if I move small window to fit into hole, once I activate main window to actually play, small window disappears
3 - Graphics in main window does not take whole window area
4 - Main window size keeps reducing as I switch Main/Slave using F1
5 - Main window flickers