It’s supposed to be team-scoped and you should have seperate relays that activate both overlays for each team.
The Overlays should also activate Tag Zones’ Tagging Team corresponding to the Relay Audience of the Relay.
Since you’re on mobile, this might help.
Extra tip: if you select a device/s, it will be the only device/s to appear in the layers tab making it easy to change their settings.
The layers will only show all devices till you select something again.