def add_method_drop_down(self, col_number, col_label):
        """
        Add drop-down-menu options for magic_method_codes columns
        """
        if self.data_type == 'ages':
            method_list = self.contribution.vocab.age_methods
        else:
            method_list = self.contribution.vocab.age_methods.copy()
            method_list.update(self.contribution.vocab.methods)
        self.choices[col_number] = (method_list, True)