In the Tibber-app you can easily move devices between homes by doing this:
1. Go to Power-Ups and pick the Power-Up you want to move to another home
2. Tap the gear in the right corner ⚙️
3. Select the devices you want to move
4. Then select the home you want the devices to be registered in
5. Return to the homescreen, select the correct address and activate the devices.
6. To do this, tap the three dots at the left corner (...). Select the devices you want to appear on the home screen.