Where to place JQuery Code to display SharePoint Choice Field Radio Buttons Horizontally

I'm attempting to display SharePoint Radio Buttons horizontally. I've read other threads on this same question, but I'm confused. I 've read that you should use some JQuery code. I've located a snippet of code that is  listed below, but I have no idea of where to place it. I've attempted to open the Web Part view of the form in Designer, but I don't see the code for the infopath form that I have created. Could someone please walk me through the steps of where to place the code and how to get there?

Please Help!

JQuery Code:

$().SPServices.SPArrangeChoices({
	listName: "",
	columnName: "",
	perRow: 99,
	randomize: false
});