Lock ckeckboxes in ListView

Hi there, I would like to know if I can lock the checkboxes on a listview. I have a form which loads information onto some textboxes once a listview item is selected, then the user will change the selected values on the textboxes and then, when the value is verified, the checkbox of the selected item should be checked. Can you help me with this? I think there should be an option to lock them by default but I cannot find it.

Thanks in advance