The UNAwheel Mini does not move when you press the throttle lever right after turning on the power assist (safety reasons), you have to select the speed mode first.
Select the speed mode by using up and down buttons on the left joystick (Forward max 6 km/h, Fast forward max 16 km/h, reverse mode).
To start driving, press the throttle lever smoothly. Throttle lever is placed on the right side of the handlebar. The harder you press the throttle lever the faster you speed up.
Use the brake lever to brake (on the left side of the handlebar). Additionally to control braking and on all slopes put your right hand on the wheelchair right wheel rim and brake like normally on a manual wheelchair.