Help With Basic Input Selection / Transition

I have a VERY basic setup with all entities and activities loaded on the remote but can’t figure out how to get the HDMI input to change over successfully. Here is what I have:

LG TV (Live TV)
Roku (HDMI 1)
Sonos

Example - When I transition to HDMI 1, I just want the remote to control the Roku

Sonos will always be the audio source, so that will never change.

Roku and Sonos do not have power buttons, so not sure how to address that.

I used to have a Harmony Ultimate remote that was super easy to set up, so how do I configure this remote to be just as simple?

Hi.

So, when you select your “Roku” activity, the tv doesnt switch to HDMI 1?

If so - i would start by checking your On Sequence of the activity.

With my Samsung i had to add a small delay between switching the tv on, and the switch to HDMI 1, to give the tv the proper time to boot up.

Like in your Harmony you have to create an activity. Harmony did almost the complete configuration with a few questions of wizards. With the R3 you must do everything by hand like button mapping and GUI configuration. For LG exist an integration which controls also the LG like Roku and Sonos by IP.

Ralf