How to create a "node" using QObject

[cryomicl]

I have been tasked with modifying the GUI of a software, specifically I need to add a third node under "PORT-1" and "PORT-2" called "CONNECTIONS" . Now I haven't worked in Qt before and really would like some guidance.
Image: https://i.stack.imgur.com/QG0LE.jpg

From the start I was told that every node would have its own class and header, in which bespoke functionality could be added. I just need to show an empty "CONNECTIONS" node for the time being.

I went ahead and created the following header and class file:

Header: FCConnections.h

#ifndef FCCONNECTIONS_H
    #define FCCONNECTIONS_H
    #include <QObject>
    #include "FCInterface.h"
 
    class CFCConnections: public CResourceItem
    {
 
        Q_OBJECT
        Q_PROPERTY(QString Name READ fnGetName)
    public:
    	CFCConnections(QObject*);
    	~CFCConnections();
 
 
    public:
    	CFCInterface*		pParent;
    	int fnGetName();
    };
    Q_DECLARE_METATYPE(CFCConnections*);
 
    #endif

#ifndef FCCONNECTIONS_H
    #define FCCONNECTIONS_H
    #include <QObject>
    #include "FCInterface.h"
    
    class CFCConnections: public CResourceItem
    {
    
        Q_OBJECT
        Q_PROPERTY(QString Name READ fnGetName)
    public:
    	CFCConnections(QObject*);
    	~CFCConnections();
    
    
    public:
    	CFCInterface*		pParent;
    	int fnGetName();
    };
    Q_DECLARE_METATYPE(CFCConnections*);
    
    #endif

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Class: FCConnections.cpp

#include "FCConnections.h"
    #include "FCInterface.h"
    #include "other headers"
 
 
    CFCConnections::CFCConnections(QObject* parent) : CResourceItem(parent)
    {
    pParent = (CFCInterface*) parent;
 
    }
    CFCConnections::~CFCConnections()
    {
 
    }
 
    int CFCConnections:: fnGetName()
    {
 
    return 3;
    }

#include "FCConnections.h"
    #include "FCInterface.h"
    #include "other headers"
    
    
    CFCConnections::CFCConnections(QObject* parent) : CResourceItem(parent)
    {
    pParent = (CFCInterface*) parent;
    
    }
    CFCConnections::~CFCConnections()
    {
    
    }
    
    int CFCConnections:: fnGetName()
    {
    	
    return 3;
    }

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The function ***fnGetName*** is just to demonstrate how I would get **READ** to work in **Q_PROPERTY**.

The main "**FCASM**" node is controlled by a class called "**FCInterface**". Now how would I go about making the "**CONNECTIONS**" node? Do I make a function in **FCInterface** or **FCConnections**? What function can I use?

The code block for the constructor of FCinterface is :

CFCInterface::CFCInterface(QObject* parent): CInterface(parent), CFCAbstract() 
    {
    	fnSetProperty("objectName",QString("%1").arg("FCASM"));
    	fnSetInterfaceType( "FCASM" );
    	fnSetResourceBaseType(m_enDatabase);
    	fnSetResourceItemType(m_enInterface);
    	fnLoadDependentInfo();
 
    }

CFCInterface::CFCInterface(QObject* parent): CInterface(parent), CFCAbstract() 
    {
    	fnSetProperty("objectName",QString("%1").arg("FCASM"));
    	fnSetInterfaceType( "FCASM" );
    	fnSetResourceBaseType(m_enDatabase);
    	fnSetResourceItemType(m_enInterface);
    	fnLoadDependentInfo();
    	
    }

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I realise this is a broad question but any suggestion would be welcome.