Select the circle, then click Insert. The Symbol is inserted into the textbox. Move the text box over the number that you want to be circled; the circle symbol will move with it. If you want to ...

From the moment Squid Game drops its first masked soldier onto the screen, the symbols on their faces demand attention. Circle, triangle, and square. They’re simple, geometric, and eerily familiar.

Almost all digital cameras with interchangeable optics display a symbol that looks like a crossed-out circle. This symbol isn't a contemporary feature but was already seen on film devices.