If you're working in multiple teams in Flow, you'll need to switch between them for time to time to ensure your tasks are being created in the right place. Here's how to do so in the iOS app for when you're on the move.
To get started, tap the team name at the top centre of the app. The team name will have a v next to it to indicate that there's more to see.
This will bring up a list of the teams that you have access to in your team's organization. To switch into a new one, just tap the name. This will instantly drop you in the new team so you can keep working without interruption.