Hello,
There is no such option by default. But you may try the following custom CSS (Theme Options > Styling > Custom CSS)
.category-grid.columns-3:nth-child(2n+1) {
clear: both !important;
}
.category-grid.product-category {
width: 50%;
}
@media only screen and (min-width: 768px){
.category-grid.columns-3:nth-child(3n+1) {
clear: none !important;
}
}
Regards