So this is how I’m making the image-buttons dynamic.
I retain all the headers in the “Home” tab, but I just leave the image URL blank for the one that I don’t want to show. To remove an image button, I simply have to delete the corresponding URL from under the header and it syncs to the live app quickly, but to add it back again, I have to put the URL back in and then manually do “Reload Sheet” in the build interface. This means that I will not be able to put an if-else on the sheet to show/remove the URL, I will have to manually reload the sheet again for it to take effect. Unless there is a better way to do this which I haven’t figured out.
I tried dynamically repopulating the header rows with a filter from another Settings tab, but that didn’t work. I think in Glide you need to retain the headers in the same columns, else the whole thing is rebuilt from scratch.