How do I view the thumbnail browser by "Display Artist"?

[sleepless]

I have tried creating a custom tag, but that doesn't work.  If an artist contains a DISPLAY ARTIST tag created when using the multiple artist splitter (in the tag editor), it doesn't show up. An artist will only be displayed if a custom tag is created seperately, using the tag inspector or editor to create the DISPLAY ARTIST tag. This is very confusing because both tags are displayed exactly the same in the tag inspector as TXXX/DISPLAY ARTIST.