Question modify menu in form and listview

[nizmo]

hello guys this is my first post in the forum , i need help in which i am creating a simple payroll system for my assignment.. it has open menus to open the .txt files and save with inserting new employee into the array all linked to the class which all works .. i also need a modify menu where i can edit the employee and change the data in the form where that insert new employee form pops up so i can make changes in that something like that.

my project files are attached

if someone can help me in this please,thanks
Navneet