Containers and Spawning in Position

I've been trying to get to grips with containers. I have a UI window sprite which contains various HTML elements in specific positions within it. I've added them all to a container and, in the layout, moved each element to where I want it to be.

When I spawn the window, all associated elements spawn at the same point as the window. Is there built-in functionality to ensure each one spawns in the correct place, relative to the window or do I have to set the position of each one each time a new window is created? I assumed this would be a feature as in Unity hierarchies, but it either seems like it isn't or I'm using the feature incorrectly.

Any help would be appreciated.

Maybe you should use hierarchy instead of containers.

Maybe you should use hierarchy instead of containers.

I've tried this but I seem to get the exact same issue. I'm sure I can work around, but it just feels like a feature that should be here somewhere - I'm just not using it correctly.

Definitely use the hierarchy feature, remove all containers. You can create the entire menu on a different (unused) layout, add all objects to a hierarchy. Tick "create hierarchy" checkbox in "Create object" action. This will create the entire menu!

Thank you a thousand times! I knew I was probably missing something quite simple, just couldn't figure out what.