WordPress SEO (1.1.5)
NextGEN Gallery (1.9.2)
NextGEN Gallery changlelog for v1.8.0 says "NEW : Adding Google Sitemaps for Images (require WordPress SEO plugin by YOAST)".
1. How does one set this up correctly? Or does it automatically work, no setup necessary?
2. What does the image sitemap look like when properly set up?
In my case, I have sitemap_index.xml, which points to page-sitemap.xml, which lists the page on which I have the NextGEN Gallery shortcode. There's a number>0 listed in the Images column. Is that what it's supposed to look like, and that's all?