Hi, I added a container to my “add item” screen, but it does not seem to respect columns. I’d like the checkboxes to show side-by-side.

Layout is automatically applied based on device size. Not clear when you choose the number of columns. But they will automatically stack if device screen size is smaller.
I thought the same, but these screen clips are from a full-size monitor.
Are you using the default Slide-In target for your Add Item?
Containers will always stack in a slide-in, regardless of screen size.
If you want this setup in a Form, you’d need to change the target to one of Current, Main or Overlay.
Good point on the slide in.
Here’s a hack to get things side by side on mobile/ side in.
Create a two row helper table and add a column with (1,2)
Add a custom collection (Layout Grid - Size Medium) to your screen where the Source of the custom collection is the new 2 row table.
Put two components inside the custom collection… set the visibility condition of the first component when helper table = 1. And for the second component when helper table = 2.
Thanks! This worked for me to display columns for choice components on an overlay when nothing else would. ![]()