Motion Warning -- How to link to Modes?

Simple question: just trying to get the “Motion Warning” setting to be linked to a mode. For instance, at night when I go to sleep and set the system to “Away” mode (motion sensors which trip the alarm are outside my bedroom, that’s why I do it this way) I want my two outside hardwired cameras (Floodlight Pro, I think they are) to be set to “Motion Warning” on. It seems in the past this was possible but in the current app, there is no device setting under Modes. I found an earlier discussion about this which mentions a “workaround” but the “workaround”, so far as I can see, is not specified. Can anyone give me step by step instructions for the “workaround”. I am using an iPhone 14 and just updated to iOS XXXX today. In the morning when I wake up I set the system to “disarmed” and I would like the motion warnings to be off under “disarmed” mode. TIA.