Hi
I have this exact same issue, I want to track the light level for my plants over the past 3 hours but the temperature and humidity over the past 7 days.
No matter what I try, I can not get these JSON properties to work. Every time I paste them into JSON Model and press Save, Grafana just overwrites “timeFrom” to null and removes “hideTimeOverride” completely.
edit: here is my model: https://pastebin.com/QeREyqjj
edit2: by the way, there used to be a way only three years ago as seen in this post: Multiple Time range? - #8 by torkel but it looks very different now and the “Time Range” tab is nowhere to be found. 