I've tried reading similar answers about exporting to different sizes, but I'm still a bit confused.
What I'm trying to do is to optimize my process of creating header images for my blog. For each post, I want to generate 2 images, one 800 x 800 with a link to my website (what I've labeled INSTAGRAM) and another 1200 x 627 without the link (FACEBOOK).
I've tried playing with
Save for web, but I currently have to hide the instagram layer, save as transparent png and do the reverse for the other image. Is there an easier way? Maybe using multiple artboards, or slices?