def prior_min_field(field_name, field_value):
    """
    Creates prior min field with the
    :param field_name: prior name (field name initial)
    :param field_value: field initial properties
    :return: name of the min field, updated field properties
    """
    name = field_name
    value = field_value.copy()

    value.update({
        'label': 'Min',
        'required': False,
    })

    return name + '_min', value