Hi @TSharp, welcome to the community!
If you download your form in xls format you can easily change the required column to true. This is a support article showing you how to dowload your form in xls format.
https://support.kobotoolbox.org/getting_started_xlsform.html#downloading-an-xlsform-from-kobotoolbox
If you need further help, don’t hesitate to ask 
Best,
