This is the homepage of the Accelerator & beam physics modeling interest group in the topical group Theoretical Calculations and Simulation (CompF2). CompF2 is part of the Computational Frontier (CompF) in the Snowmass 2021 process organized by the Division of Particles and Fields (DPF) of the American Physical Society.
You can just edit the files inside docs/source/ as needed and send updates as pull requests. (Here is a quick introduction on how to work with GitHub.)
The easiest way to do this is by visiting the homepage itself under
https://snowmass-compf2-accbeammodel.github.io
and clicking the "Edit on GitHub" button on each page's top right corner. Note that you might have to open this homepage on a desktop/laptop computer to see this button.
The technology behind this page is Sphinx.