GoGet always pays for fuel, so if you've paid for fuel during a booking, you should submit a fuel reimbursement after the booking ends.
Fuel reimbursements can only be submitted after the booking ends.
So, if you've paid for fuel at 4pm, and your booking ends at 6pm, you can submit a fuel reimbursement after 6pm.
Once your booking ends, in the GoGet app, tap on Account, then Fuel Reimbursements, and follow the prompts.
You'll need evidence of paying for fuel yourself, such as a receipt.
If you were left with less than a quarter tank of fuel, evidence like a photo of the fuel gauge, or a receipt showing the litres of petrol filled will be needed.