The rear armrest in the center of the rear seatback can be used (no occupant in the center seat) or placed upright.

WARNING
Never put your hands and fingers around the moving parts of the seat and armrest:
Putting your hands and fingers around the moving parts of the seat and armrest is dangerous as they could get injured.
Split Folding
Head RestraintsMazda 6 Owners Manual: Glass panel adjustment
1. Fully close the glass panel.
2. Measure the gap and height between the glass panel and body.
3. If not as specified, loosen the glass panel installation screws and
reposition the glass panel.
Clearance
a: -0.8-1.2 mm {-0.032-0.047 in}
b: 0 mm {0 in}
4. Tighten the installation scre ...
Mazda 6 Owners Manual: Liftgate side trim removal/installation
1. Remove the liftgate upper trim.
2. Position the strap hanger as shown in the figure.
3. Pull the liftgate side trim toward you, then disengage clips A, pin B and
the strap hanger from the body and pin B, hook C, D from the liftgate lower
trim.
4. Remove the liftgate side trim.
5. Remo ...