How to set screen time limit for Find My app?

My son is very interested in maps and will happily spend his allowed screen time perusing Maps. He's discovered that there's ALSO a map in Find My and Weather! So he'll just hop to those of his allowed daily Map limit has been reached. I've added Weather to the screen time limit but Find My isn't listed. How can I either add it to a screen time app limit or block it entirely behind a parental control?

For an iPad 11th generation, not 10th, since that's still not an available device selection.