Canon Laser Class 810 Basic Operation Manual page 58

6
Press [ ] or [
7
Press [ ] or [
8
Press [ ] or [
9
Press [ ] or [
1-22
] to select <MONTH>, then press [OK].
] to select the month, then press [OK].
] to select <WEEK>, then press [OK].
] to select the week, then press [OK].