Garmin TACX NEO BIKE PLUS Owner's Manual page 10

4 Tilt the trainer forward to install the back legs .
5 Use the M10 x 65 mm bolts , 10 mm washers , and the 8 mm hex key to install the back legs.
6 Turn the knobs on the front legs to stabilize and level the trainer (optional).
6 Tacx NEO Bike Plus Assembly Instructions