std::list<shared_ptr<Shape*>> pLShape?

Question

I have a question and that is that in List, vector and/or shared_ptr/unique_ptr you can pass classes as objects as well as pointers. I do not understand now when one would use e.g shared_ptr<Shape*> pShape;? When does it make sense to pass e.g. in the case the class Shape as a pointer and when not?

#define _CRTDBG_MAP_ALLOC 
#include <stdlib.h> 
#include <crtdbg.h> 
#include <iostream> 
#include "CAD_Drawing.h" 


...

void CAD::CAD_Drawing::vDrawIt(void)
{
    for (auto it : CAD::CAD_Drawing::setShapes_)
    {
        it->vDraw();

    }
}
void CAD::CAD_Drawing::vAddShape(std::shared_ptr<Shape> pShape)
{
    setShapes_.insert(pShape);
    
}

void CAD::CAD_Drawing::vRemoveShape(std::shared_ptr<Shape> pShape)
{
    setShapes_.erase(pShape);
}