Hi,
Sorry for the inconvenience. To spread your 3 footer positions across the entire width of the site, you need to turn the footer row into a Fluid Width container in Helix and adjust the column grid.Here is how to do it in 5 quick steps:
Set the Row to Full Width Go to System > Site Template Styles and open your Helix template. Click the Template Options button to open the customizer. Go to the Layout tab on the left sidebar. Find your Footer row. Click the Gear icon (Section Settings) for that row. Turn the Fluid Width (or Full Width) toggle to ON.
https://prnt.sc/0orX7npteMQp
You can also adjust the grid system from here
https://prnt.sc/6a8Y4GN-nqAB
For your other questions, please create a new forum post, so that our team will help you.