How do I make the Ref Des field visible on teh where used tab?
The Where-Used tab does not directly reference the BOM table, and so Ref-Des values cannot be shown in the tab.
The issue is that the item is not shown per usage by assembly rev, but just by assembly. So if it’s Ref-Des was modified for different revisions of the assembly, it would have to decide which one to show (latest?). They opted to simply not show anything linked to the assembly rev and so not show any BOM attributes (note that quantity and find number cannot be shown either, IIRC).