Running Multiple Algorithms on Alpaca - Alpaca Proxy Agent

I’d like to implement exactly what is explained in the following Alpaca Article:

This article is from 2020 and predates API V2 release date, before I go down this rabbit hole, I wanted to double check that this is still supported and following this article still applies.

If there is more recent articles or instructions, any help would be greatly appreciated.
Thank you so much!