Step 1: Download relevant jQuery Select 2 files from jquery.com
Step2: Place the jQuery file in includes/page/footer.inc
Step3: Place the following code in company/0/js_cache/utils.js
$.fn.select2.amd.require([
"select2/core",
"select2/utils",
"select2/compat/matcher"
], function (Select2, Utils, oldMatcher) {
var $basicSingle = $(".js-example-basic-single");
$.fn.select2.defaults.set("width", "100%");
$basicSingle.select2();
}
);