Hi Brandy, I've been giving your requirements some thought today. Pretty tough one -- perhaps even not possible -- using Workfront's standard reporting. Best guess, in theory, with no testing, and admitting that I might be overthinking it, this might have a shot:
create a custom parameter that records a) for each Child node task's (i.e. "Number of Children = 0") Parent ID in it, or b) for Parent Tasks, it's own ID
create an EXISTS that finds every such custom parameter where the Tasks is assigned to the logged in user ($$USER), using Anthony's tip above
apply that EXISTS against a Task Report that joins on that custom parameter
If that's too much, though, I'd invite you to consider our "https://store.atappstore.com/product/magic-reports/" Magic Reports offering, if the benefit warrants so. Regards, Doug
Doug Den Hoed - AtAppStore