Here is the thing. I have several images of bathrooms (for my shop) and one main image of bathroom. I need to link the main image to another images somehow. And when I click on the main image, I will also see all bathroom images.
Can I do this with your gallery?
To accomplish your request you can use Linked Image option. It will allow you to see several images in the popup of one image.
You can check more and find the instruction here https://supsystic.com/linked-images-popup/