I have gridview in form(winform). I take checkboxcolomn

Question

I have gridview in form(winform). I take checkboxcolomn gridview. When I run the application i can not checked or unchecked that checkboxes which inside that gridview. I selects the role and want to set his access like he can save, update or delete the record from various forms using checkboxes shown in grid. But it can no be selected or checked,unchecked.  Plz help.