Maybe nice add some lines to the documentation, that it is possible to use the Custom Program feature to join many forms into one:
In the PinVolSettings.ini
Program = displayName:"PinUpMenu",appType:"PinUpMenu",exe:"pinupmenu.exe"
Program = displayName:"PinUpDisplay",appType:"PinUpMenu",exe:"pinupdisplay.exe"
This will make one entry for all active PinUp forms. This way it will stay at the same level for all of them.
Program = displayName:"Not Responding",windowPattern:".*Not Responding.*"
In case a window hangs, all these windows would be saved to one entry in pinvol