Pinegrow 3 fonts how to use them?


I am really struggling with the Pinegrow 3 Google fonts.

I added a google font using the:
Page>>Manage Google fonts

I have then copied the font name but I just do not know where to paste this in the software. I know how to do this when hard coding, no problem at all but not in the software itself, could someone help me please?

Also something I did find strange is that you cannot see the fonts look after downloading them in the “Manage Google fonts”.

Thank you.