Solution for this topic
I hope you are well today and thank you for your questions.
Edit the column width of the footer widgets? I tried using YellowPencil but it altered the responsiveness.
You can make changes in the YellowPencil responsive mode as described in this page https://waspthemes.com/yellow-pencil/documentation/#responsive-tool
Or you can develop custom CSS code to achieve it.
Link a button to another section within the page?
Yes you can achieve this using anchor link as button link.
You can find more information about internal page anchor link in the following pages.