Thank you! I got the API key. Now all I need to do is get it to show up on my photo gallery pages . . .
Thank you. I should have guessed that the list item called “Customize” is referred to as “the Customizer”!
I’m afraid defining a “class” is a bit beyond my skill level at present, if it’s not a category or something else already on the Dashboard or in the Customizer. Hopefully, I will work my way up to it. One step at a time!