Download the assets and unzip the folder into your /lua directory.
Load the script in-game with:
/lua run ezinventory
The UI will appear and begin syncing inventory data automatically via inventory_exchange actor. NOTE: This script must run on all characters to ensure cross screen sync. On start up, it should determine if you're connected via EQBC or DanNet, and broadcast the startup command. If no other characters appear, from your main screen broadcast: /bca //lua run ezinventory (or, /dgra /lua run ezinventory). Give it a moment, and your data should appear.