First, adjust the angle of the handle by pressing it down. Pull the seat to the 4th position and release the handle. Then, use one hand to pull back and rotate the handle, while the other hand grips the base and rotates it 180 degrees to face the bottom. Locate the ISOFIX anchor points in the car and insert the car seat's guide into the ISOFIX anchor points.

Begin by pulling and turning the adjustment handle forward with one hand, while using the other hand to grip the main body and rotate it left or right 180 degrees to align the base. Next, press the angle adjustment handle and move the seat to the 1st, 2nd, or 3rd position, then let go of the handle.Finally, make sure to place the car seat facing towards the front of the car on the car seat.

Unlatch the ISOFIX latch, push the red release button on the ISOFIX latch inward, and then release the ISOFIX latch.Align the ISOFIX connectors on both sides with the car's anchors, push them in with force until you hear a click. Check that the ISOFIX indicators show green, indicating successful installation. Push the car child safety seat against the car's backrest to ensure a tight fit with no gaps.

Remove the shoulder harness, thread it through the left or right seatbelt guide on the car seat headrest, and attach the shoulder harness hook to the corresponding fixed point on the car's shoulder harness. Then tighten the shoulder harness until the adjuster shows green, and shake the seat to check if the harness is secure. To release the shoulder harness, press the adjuster button firmly and pull the shoulder harness in the opposite direction to relax it, then remove the shoulder harness hook.

Relax the shoulder straps, hold down the shoulder strap adjustment button with one hand, and pull the shoulder strap outward with the other hand until the strap is at its longest. Release the buckle, pull out the insert, then place the child in the seat. Pull up on the headrest adjustment handle to adjust the height of the headrest and shoulder straps.

Have the child place both hands through the shoulder straps, buckle the left and right tabs stacked squarely, insert from the top slot of the buckle, and listen for a "click" sound to confirm successful insertion. Pull the adjustment strap outward to tighten the shoulder straps, and check if the buckle is securely fastened. Note: the shoulder strap should be adjusted so that the padding is snug against the child's chest. The tightness should be equivalent to the thickness of an adult's index finger. Make sure there are no twists or slack in the shoulder straps.