Image scale proportionally in grid

Hi Yanay

Many thanks for your answer and your support. For some reason this doesn’t work when I do it or I might be doing it wrong. When I dock the images vertically, and set them to scale proportionally, they still overlap. It might be because I can’t define the grid area properly. When I type in the specific columns, the image hops to another column it doesn’t belong to. For example the top image should be on columns 3-7 but it’s set to 3-8 and when I type in 7, it shrinks massively. Here is a screenshot of how I do it. I’m very grateful for any advice!
Many many thanks!

Best, Nadine