For multiple inputs per row, this post decribes a helper function which creates the required input callback: https://talk.observablehq.com/t/making-inputs-reusable/4534/3 Perhaps a useful addition to the notebook?

Hi Harris, any thoughts on adding the helper?

I love it! Would you be open to forking and suggesting? Would accept a suggestion. I was also wondering if it would be possible to integrate @tomlarkworthy's view literal in some way, but haven't looked too deeply into it. https://observablehq.com/@tomlarkworthy/view