Как переместить объекты из одного "списка" в другой

#include <iostream>
#include <string>
#include <conio.h>
using namespace std;
void lines() {
    cout << "================================" << endl;
}
 
class PriceList;
class Model {
    string model = "None";
    string CPU = "None";
    int freqency = 0;
    int memory_size = 0;
    int HDD_memory = 0;
    float price = 0;
public:
    Model(string model, string CPU, int freqency, int memory_size, int HDD_memory, float price){
        this->model = model;
        this->CPU = CPU;
        this->freqency = freqency;
        this->memory_size = memory_size;
        this->HDD_memory = HDD_memory;
        this->price = price;
    }
    string GetName() {
        return model;
    }
    float GetPrice() {
        return price;
    }
    // Информация о ПК
    void Getinfo() {
        lines();
        cout << "   PC Model - " << model << endl;
        cout << "   CPU - " << CPU << endl;
        cout << "   Freqency - " << freqency << endl;
        cout << "   HDD Memory size - " << HDD_memory << endl;
        cout << "   Memory size - " << memory_size << endl<< endl;
        cout << "   Price - " << price << endl<<endl;
        lines();
    }
 
};
 
class PriceList{
    Model arr[3]{
        Model("Asus", "Intel pentium", 160340, 12300, 9300, 20000),
        Model("Lenovo", "Intel Core", 2500, 600, 12300, 1400),
        Model("Dell", "Intel Celeron", 33300, 100, 900, 23000),
    };
public:
    Model & operator[](int index){
        return arr[index];
    }
};
 
class shoplist {
    Model shop[3];
public:
    Model& operator[](int index) {
        return shop[index];
    }
};
 
int main()
{
    PriceList PC;
 
    cout << "WELLCOME TO OUR SHOP!" << endl;
    lines();
 
    for (;;) {
        cout << "Choose action (press P for viev new PC, press L for viev shoplist, e for exit): \n";
        char a;
        a = _getch();
        if (a == 'p') {
            cout << "Choose PC from list: " << endl << endl;
            for (int i = 0; i < 3; i++) {
                cout << "   " << i + 1 << ". " << PC[i].GetName() << "  " << PC[i].GetPrice() << " UAH" << endl;
            }
            int i;
            cin >> i;
            PC[i - 1].Getinfo();
        }else if (a == 'e') { break;}
    }
}