If you want to park the scooter and leave it for a while, you can. Park up, turn off the engine and engage the steering lock, handbrake and suspension lock. The rental will continue, even though the vehicle is stopped, and you can hit the road again whenever you want.
If you've finished the rental, just leave the scooter in any authorized parking space within the service coverage area.
Before getting off the scooter, always engage the suspension lock, set the "Run" button to the "Off", push the "lock" button to unlock the saddle, position and engage the handbrake. Put the scooter on its stand and engage the steering lock. Put the helmet in the trunk and the key in the key slot under the saddle, then press "End rental" on the onboard computer.
Always make sure the "e" indicator light in the hadlebars goes off and check the incoming receipt of bill. This confirms that your rental has finished.
And for heaven's sake make sure there aren't any temporary parking bans due to kick in within the next 48 hours! (These might be due to street cleaning, street markets, road works and so on).