Hi

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Responsive Column Options > Responsive tab - from where you can hide a column on chosen devices. Those breakpoints are based on screen dimensions:

Phone (max-width: 575px, what means less than 576px) Larger Phone (min-width: 576px, what means between 576px and 767px) Tablet (min-width: 768px, what means between 768px and 991px) Smaller Desktop/Laptop (min-width: 992px, what means between 992px and 1200px ) Desktop (min-width: 1200px, what means 1200px and up)

You can folloe this docmentation below:

https://www.joomshaper.com/documentation/helix-framework/helix-ultimate-2/layout-builder

-Regards.