Split One Radio Button Into Columns

Hi everyone, I have a dashboard input with ~40 options. I could set this to a Dropdown which would work fine, but ideally want to keep it as a radio button and split the many rows across a couple columns. The inputs are different events across the week with a variety of start times, and if I can I would like to split it up into 5 columns, one for each workday of the week, that way they are nicely sorted, and all still visible. If there is a way to edit the xml source to split the radio button choices into custom columns, or even just to split them into a couple columns automatically, that would be great, thanks!