I filtered my LingQs by a particular tag and want to add a new tag to all those LingQs. But it seems I can’t do it; when I selected the LingQs and clicked on More Actions, the button for Add/Remove tags was greyed out, as below. Is there another way to do what I am trying to do?
That’s not possible at the moment. You can add a tag to all LingQs listed on the page if you select them all, but not to all selected (in your case 3.8K LingQs).