Yoko: gallery or grid of images with links to posts

I be grateful for help with what I’m trying to achieve.

I’d like to have a screen that shows a grid of images (eg concert flyers.) Clicking on an image should take me to a post about that concert. Not to the image url.

Can I do this with a gallery? So far, I can’t make gallery images link to a post.

If not, can I create a page that will display images in a grid? So I could link each individually to its concert post. Some pages would only need a grid of 4. Some might have more eg 9.

[Edit: using Yoko theme on a wordpress.com site.]

Thanks for your help.