Car Logbook question

I just joined UberX partner recently. For the tax purpose, the driver need to keep and record logbook for 12 weeks and valid for the next 5year.

Quoto from ATO : "The number of kilometres travelled for each journey recorded in the logbook (if you made two or more journeys in a row on the same day, you can record them as a single journey)."

Question 1: Do I need to record every single (Each) trip KM to KM in my logbook? For example I took 20 trips a day, do I need write all 20 trip in 20 column?

Or I just need to write the KM to KM that I used for the business purpose a whole day? like 20 trips for a single column?

Question 2: Switching to Online mode on the Uber app from the Starting day, does it count as a Business KM? Finish a trip and going to pick up another customer, in the middle of the car mileage, is it count as personal use or business use? and finished the trip and go to home, is it count as personal use KM or business purpose KM?

Thank you