This repository contains Arma 3 Squad XML files for “RT Columbia” and “RT Raleigh”. To use them in-game your Steam ID must be added to the respective file and you must configure your game to use the “clan”.
https://savage-game-design.github.io/squadxml/columbia/squad.xml
or https://savage-game-design.github.io/squadxml/raleigh/squad.xml
into the URL field