Hi Abdul Azeez,

Below is a code for one2many field where I have created a checkbox in the models for the line items. The row should be editable so I have tree editable="top". I have added a button named "Select Lines" in the page which is used to perform action on the selected rows.

string="Lines" name="related_line_ids">

name="sample_line_ids">

editable="top">

name="checkbox"/>

name="name"/>

name="value"/>

On button click the below function is called.

def add_selected_lines(self):    
    for line in self.sample_line_ids:        
        if line.checkbox:
            self.write({"sample_selected_line_ids":[(0,0,{"name":line.name, "value":line.value})]})
            line.checkbox = False
    return

You could modify the method to unlink line  for your requirement.

Hope this reference helps your problem.

Regards

Joebert