Toyota COROLLA Owner's Manual page 168

166
4-2. Driving procedures
Temporally gear steps selection mode in the D position (vehicles
with a paddle shift switch)
To drive in temporary gear steps selection mode, operate the "-" and
"+" paddle shift switches. The gear steps can then be selected by
operating the "-" and "+" paddle shift switches. By selecting gear step
using paddle shift switches, you can control engine braking forces.
Upshifting
1
Downshifting
2
The selected gear step, from D1 to
D7, will be displayed in the meter.