Extended Field Add to Column View

Hi, Ive installed the new 64 bit version, its been a while since I used the product.

I can see the mixartist field in the extended field list and can add this to the tag view - Ctrl Q but cannot figure out to add it to the column view as it does not show in the list to add? I cannot see the extended fields in the list to show? How do I add to the column view...Thanks

Many Thanks

See the documentation:

If you do not see a particular field name in the dropdown list but you know its name then simply type it in.

Thanks. I used the add field and saw that you can select from the extended list. Cheers