ZimaOS for Usenet, aars aps and Plex / Jellyfin

I am looking to move from an old Ubuntu box I utilize to manage my Usenet downloads and manage my Plex library over to ZimaOS, as I feel ZimaOS will be simpler to update & manage than Ubuntu. I don’t use BitTorrent, only use NZBGet for obtaining NZB files. I want to set up my ZimaOS similar to how I had my Ubuntu server configured, where the OS lives on an SSD and my TV shows, movies, etc live on a standard hard drive. I have my ZimaOS all installed, using a 512mb SSD for the boot drive and a 3TB drive for media storage. Since I only utilize Usenet, I feel it would be best to download and unpack to the SSD and then have either SabNZB or NZBGet move the finished files to the 3TB storage drive

I am a bit of a loss on how to set up the folder structure for this in ZimaOS. I have been watching a number of ZimaOS videos, but most walk you through where the storage drive is in a raid config, which I won’t be using at this time.

I have also watched this video - ZIMA OS Ultimate Setup Media Server Jellyfin The Arrs Prowlarr Sonarr Radarr Gluetun – at 10:41 "Create a dedicated user on ZIMA OS for permissions”, would I do this on my SSD or the 3TB storage drive?

Appreciate any tips anyone can offer!