Hello,
01. Unfortunately, there is no such option by default. You need to find a third-party plugin to achieve more functionality that best suits you.
02. Unfortunately, There is no option in Theme settings available to hide subcategories from the search bar drop down. To hide the category from the search dropdown you need to add the following custom CSS code in the Global Custom CSS area under Theme Settings >> Custom CSS.
.wd-dropdown-search-cat .cat-item-2336 {
display: none !important;
}
You can replace the ID 2336 by your desired once that you want to remove it from the search bar.
If you want to remove all the sub-categories use this css code:
.wd-dropdown-search-cat .children li a {
display: none !important;
}
Best Regards,
.
