How to create a subclass of thread Class properly

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C++

C++/CLI

Visual-Studio

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I am trying to create a class "Parallel" which is a subclass of thread class,therefore my class is defined in "Parallel.h",but my main method defined in separate file "main.cpp" in same project(in visual studio).When I create an instance of Parallel class and execute join() function in main method as below code segment:
//Parallel.h

#include <thread>

using namespace std;
namespace Para{
    class Parallel:thread
    {
    public:

        static void run(){

        }
        Parallel(void)
        {
        }

        virtual ~Parallel(void)
        {
        }

        inline static void start(Parallel* p){
                    // (*p).join();
        }

        virtual void Parallel::start(thread& t){

        }
        static void parallelize(Parallel& p1,Parallel& p2){

        }
        inline virtual Parallel* operator=(thread* t){
            return  static_cast<Parallel*>(t);
        }
    }

;
}
//main.cpp

#include <iostream>
#include "Parallel.h"
#include "Resource.h"

using namespace std;
using namespace Para;

void main(){

    Parallel p;
    p.join();
    thread t(print);
     t.join();
     //cout<<p.get_id()<<"\n";
     system("Pause");

}

print function defined in "Resource.h"

Problem is how to define a proper subclass of a thread class having a overloaded constructor taking function name as a parameter,also "

p.join()

" gave following compile errors:

Error 2 error C2247: 'std::thread::join' not accessible because 'Para::Parallel' uses 'private' to inherit from 'std::thread' C:\Users\Gamer\Desktop\PROJECQ\VC++@OMAQ\CQ47\CQ47\main.cpp 11

3 IntelliSense: function "std::thread::join" (declared at line 209 of "H:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\include\thread") is inaccessible c:\Users\Gamer\Desktop\PROJECQ\VC++@OMAQ\CQ47\CQ47\main.cpp 11

How to construct a subclass of thread class properly