Yes, there is already an app for that. And it’s been used by many of my contributors.
http://thingsthataresmart.wiki/index.php?title=EcobeeSetZoneWithSchedule
The smartapp can do even more features based on the concept of zones:
- Control of smart vents to create physical zones
- Alternative cooling
- Avg temp calculations based on any ST temp/motion sensors to make adjustment to your ecobee’s setpoints
- More heat/cool thresholds based on an outdoor temp sensor.
Regards.