Tiling tiles question

I feel like an idiot asking, but could someone please give me some advice on tiling the cameras on my dashboard - in a row horizontally across the screen.

Here’s how the cameras appear on the dashboard, but I’d really like them to appear 3 across the page.


r

Here’s the YAML code…

CameraYaml

I am sure the solution is very simple, but after a week of trying I cannot seem to crack a solution.

Any advice appreciated.

Horizontal layout using this: