I did find a post on linked in explaining on how to do this.  I don't think the person from Quickbooks is understanding what any of us want.  We are not asking on how to calculate overhead, just how to cost it to a job.  Here is the link from the post I found. 

https://www.linkedin.com/pulse/allocating-overhead-costs-jobs-quickbooks-bilal-ahmad-zzsbf#:~:text=A....

Hope this helps you