As EXTRA step, use also that Custom CSS (In Helix Documenation read where to use it)
.sp-dropdown-main.sp-dropdown-mega .sp-dropdown-inner .row > div ul.sp-mega-group {
padding: 20px 10px;}
@media screen (min-width: 1360px) {
.sp-menu-full.container {width: 990px;}
}
@media screen (min-width: 1280px) {
.sp-menu-full.container {width: 840px;}
input.js-finder-search-query.form-control {max-width: 210px;}
}
Both steps (settings and CSS) It will help fit everything in all screens (Laptops, Desktop), yes submenu width will be smaller, but no problems to see all boxes.