Tap MileCatcher's open app screen 3 times with 4 fingers to issue a trip. Or exit your car and walk with your phone in your pocket/bag for 20 seconds.
If you continue driving, the next trip will be logged automatically.
This can be useful if you make a short stop without leaving the car and split your route/purposes.
Sorry, but app doesn't enable splitting a trip. If needed, delete trip and log two manually.