To manually record your trips, go to Settings and switch "Auto record trips" to OFF.
You manually record each trip by clicking the steering wheel icon in the upper right corner of the dashboard. Flo immediately starts searching for a GPS connection and your trip data is recorded while driving.
When you want to finish the trip, simply tap the flag icon that is now displayed in the upper right corner.
If you want to automatically record your trips, see "How do I record my trips automatically?"