Advanced Excel Formula Specialist Wanted - URL Links Created From Form Data

As you can see from the URL's created in the attached document we fill in the form with most of the data from the excel file. We do not fill in one of the fields from the excel file " Secret Santa's Name You Are Donating On Behalf Of" and this must be added the URL (Secret Santa First & Last Name). The formula for the other fields is already there. See attached and the web form it is filling.