Font too small to read

The font in the calendar chart header is too small, how do I enlarge it?
I played around with the UI but it enlarges everything which I dont want/like. I seen somewhere where you can fix it–and have in previous versions–but I cant find it.

It is a problem indeed. Once we’ve started to work remotely on the 15’ laptops instead of 24’ monitors highlighted font became too small to deal with.
I am subscribing to a petition to increase the size or make it controllable in the options menu

Actually, I am using twin 24" monitors . . . I had seen a post ( Link for directions describing how to fix it directly inside the software, but the link doesn’t work anymore.