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Dynamic Columns in Repeating Group

I am building a dashboard with a floating menu on the left and a repeating group with 4 columns to the right. With a button, the user can collapse the floating menu. When that happens, the repeating group has 4 columns. Is there a way for the repeating group to recognize that the floating group is not visible and then add another column to the repeating group? And vice versa, when the floating group menu reappears, the repeating group dynamically collapses back to 4 columns.

Not really responsive per se - but a function that would make the user in control of how much data they can access through the dashboard.