Character viewer missing Unicode blocks

I just switched from OS 10.9 to OS 10.14, and the character viewer (aka “Show Emoji & Symbols”) looks like this:

enter image description here

Where have all the other Unicode blocks (e.g. Greek and Coptic, Cyrillic, Georgian, Phonetic Symbols) gone? How do I get them back?

(Also, what do I tag this as? keyboard and character are the only two suggestions, they don’t seem appropriate, but I’m out of ideas…)

In Capture One, how to Color-tag one image at a time when multiple selected in viewer?

In Capture One, I can select multiple images at the same time and use the viewer to cycle through them.

I’d like to use this so that I can cycle through variations on the same image and pick the best one by either assigning green to the one I like or red to the ones I don’t like.

However, the - and + hotkeys for assigning color assigns the same color to all photos in the viewer, not just the currently selected. I can manually click to do it one at the time, but that is incredibly time consuming.

Is there a way to get the color tag hotkeys to work on one photo at a time?