Caps lock key to behave like non-toggle modifier Is it possible to make the caps lock key behave like a normal modifier, and not as a toggle switch?

I have a custom keyboard layout which allows me to use the caps lock key to type Greek symbols. (It‘s useful for STEM students.) Most of the time, I only want to type a single Greek symbol—in which case, it would be much easier to use the caps lock key like one uses the shift key. Caps lock down, press a key, then caps lock up—caps lock does not remain on.

Is this possible to accomplish? Perhaps with Karabiner or similar?
The easy method of using Apple system preferences only allows mapping the caps lock key to modifier keys and escape key. 

Can&#39;t swap Caps Lock and Esc keys using Seil

Use caps-lock to lock fn key or other way to lock fn key?