jCarousel is a jQuery plugin that allows you to create a carousel with multiple items per slide. By default, jCarousel displays only one item per slide, but you can configure it to display multiple rows of items per slide using the visible option.

Here is an example of how to configure jCarousel to display multiple rows of items:

$('.jcarousel').jcarousel({
    visible: 3,
    wrap: 'circular',
    animation: {
        duration: 800,
        easing: 'linear'
    }
});

In the above example, the visible option is set to 3, which means that jCarousel will display three items per slide. The wrap option is set to ‘circular’, which means that the carousel will loop infinitely. The animation option is used to specify the animation duration and easing function.

To display multiple rows of items, you need to adjust the CSS styles of the carousel items and the jCarousel container. Here is an example of how to do that:

.jcarousel {
    overflow: hidden;
    position: relative;
}

.jcarousel ul {
    width: 10000em;
    position: relative;
    list-style: none;
    margin: 0;
    padding: 0;
}

.jcarousel li {
    float: left;
    width: 33.33%;
    height: 100px;
}

.jcarousel .item {
    width: 100%;
    height: 100%;
}

In the above example, the jcarousel container is set to overflow: hidden to hide any items that are outside of the container. The ul element is given a very large width so that it can contain all of the carousel items. The li elements are set to float: left and a width of 33.33% to display three items per row. The .item class is applied to each carousel item and is set to width: 100% and height: 100% to fill the available space within each carousel cell.

With these styles applied and the visible option set to 3, jCarousel will display three rows of items per slide. You can adjust the width and height properties of the .item class to change the size of the carousel items.