@Lambiek V The easiest thing to do, just like
@Adi6phil said, is to leave the car on and select neutral.
FYI, if you ever want to over-ride the parking brake, you can either pull or push the parking brake button in whichever direction you want to over-ride it.
For instance, if you want to over-ride it, so that it does not apply automatically, hold the parking brake button down and then do whatever you would normally do, e.g. select Park, or turn the car off, or open the door -- the usual actions that will usually automatically force the parking brake on.
If you ever want to over-ride it to use it as an emergency brake (for instance, if you are supervising a learner driver and do not have dual controls, and need to stop the car to prevent a collision), you can hold the button up to apply the brakes. Obviously, check conditions are safe, as the car will perform an emergency stop!
I can think of a very few number of limited scenarios when you would ever want to do this. These include:
Storing the car long-term, and you wish to store it with the brakes off and the wheels chocked
Testing the brakes at an MOT centre
Supervising a learner driver
Testing to see if the Park function of the transmission works
Testing the parking brake function before moving off, as part of a parking brake test
The extremely unlikely, but not totally impossible, scenario of a total loss of hydraulic brake fluid, in both circuits, leading to brake failure when using the footbrake -- regen will still work, unless the battery is full!