def set_form_partial_validation(form, minimum_required):
    """
    Get a form ready for partial validation.
    For all fields not in `minimum_required`, set
    `Field.required` to False.

    :param minimum_required: list of minimum required fields
    :return: None
    """
    for field_name, field in getattr(form, 'all_fields', form.fields).items():
        if field_name not in minimum_required:
            field.required = False
