How to use the vcsi.vcsi.Config.delay_percent function in vcsi

help="do not capture frames in the first n percent of total time",
        dest="start_delay_percent",
        type=int,
        default=Config.start_delay_percent)
    parser.add_argument(
        "--end-delay-percent",
        help="do not capture frames in the last n percent of total time",
        dest="end_delay_percent",
        type=int,
        default=Config.end_delay_percent)
    parser.add_argument(
        "--delay-percent",
        help="do not capture frames in the first and last n percent of total time",
        dest="delay_percent",
        type=int,
        default=Config.delay_percent)
    parser.add_argument(
        "--grid-spacing",
        help="number of pixels spacing captures both vertically and horizontally",
        dest="grid_spacing",
        type=int,
        default=Config.grid_spacing)
    parser.add_argument(
        "--grid-horizontal-spacing",
        help="number of pixels spacing captures horizontally",
        dest="grid_horizontal_spacing",
        type=int,
        default=Config.grid_horizontal_spacing)
    parser.add_argument(
        "--grid-vertical-spacing",
        help="number of pixels spacing captures vertically",
        dest="grid_vertical_spacing",