If you happen to be a resident of multiple units that have smart automation devices, you can switch back and forth between them using the "Switch Units" feature, which can be found on the Settings tab (gear icon) in the LittleBird app.

Selecting "Switch Units" will show you a list of any units to which you have access, even if they're located on other properties powered by LittleBird. You can tap on one of those units to select it.

After refreshing your home screen, you'll now have access to automation features within that unit.