Select Account,
select “manage blocks”
last item is “popular keywords” — change region from ‘disabled’ to location: left, right, top, or bottom.
That should cause it to show up. You may have to re-open your browser.
I've done it before -- I have "keyword: banglist" on my sidebar -- but it looks like the function was changed or upgraded since then.
I do appreciate the reply, though -- thank you!