I have a landing page of PostgreSQL Database, where the end user (used user filter) want to see the Top 6 recent opened dashboard thumbnails to be auto arrange as 3 x 3 axis.

I have assigned the background to the dashboard through background maps,but it was not arranged in the way i am expecting.

Is there any other way(apart from background image) to achieve this?

Please help me on, Is it possible to auto arrange back ground images?

Actually all this 5 images shown in screenshot came in one row, but the below image is what I am expecting(auto arranged).