side by side posts

I’m looking for a way to set up WordPress on a site that runs
side by side posts. It’s group blog with two authors.
I want to set up the postings from one author in the left colum, and then
the postings from the second author in the right column.
Kind of like the way this site is set up:
https://www.lockload.com/
I appreciate any suggestions and advice – and thanks,
in advance! ??