How to send IR commands to Remote 3 Dock Using Home Assistant Script

I have my Remote 3 setup to control the main parts of my home cinema but am still trying to update my Home Assistant scripts so that they can send commands to my 2 Remote 3 docks to lower projector screen, turn on speakers, etc. In the past I had HA performing this task using Logitech Harmony Hubs using a script with “Remote: Send Command” to a specific device ID and command name. I don’t recall now how, but know I had to get the device IDs and commands from a config file in HA. Do I need to do the same for the Remote 3 docks, or follow some other process?