Как я могу решить проблему удаления и поиска?

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я должен выполнить удаление, так как же я могу удалить определенный элемент векторного списка?

Что я уже пробовал:

#include<iostream>
#include<cstdlib>
#include<vector>

using namespace std;
class StoryBoard
{
private:

string title;
string text;
string tag;
public:

StoryBoard(){}

StoryBoard(string name,string remark,string identifier)

{

title = name;
text = remark;
tag = identifier;

}
void printStory()
{
cout<<"Title : "<<title<<endl;
cout<<"text :="" "<<text<<endl;
cout<<"tag="" "<<tag<<endl<<endl;
}
};
int="" main()
{
int="" position,="" choice;
string="" name,="" key,="" remark,="" identifier;
vector<storyboard="" *=""> vec;
while(1)
{
cout<<"Menu :\n\t1.Add a new note on storyboard.\n\t2.Display all the notes present on the Storyboard.\n\t3.Delete a note.\n\t4.Exit"<<endl;
cout<<"select your="" choice="" and="" please="" enter:="" ";
cin="">>choice;
switch(choice)
{
case 1:
     {                                                          //Adding a new note
cout<<"\n\tEnter the Title of your Note : ";
cin.ignore();
getline(cin, name);
cout<<"\n\tEnter Some Text in Your Note : ";
getline(cin, remark);
cout<<"\n\tEnter any Tag for Your Note : ";
cin>>identifier;
vec.push_back(new StoryBoard(name,remark,identifier));
break;}
case 2:
    {                                                                                                   //Display all notes
int i=0;
cout<<endl<<endl<<"list of="" all="" notes="" :="" "<<endl;
vector<storyboard="" *="">::iterator itr;
StoryBoard *sb;

for(itr=vec.begin();itr!=vec.end();itr++)
{

cout<<"StoryBoard "<<i+1<<" --=""> "<<endl;
sb=*itr;
sb->printStory();
cout<

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