I want to use top and bottom ovens but at different temps - how do I do this

To Set a Cook T ime:
1. On double oven models only, press UPPER OVEN or LOWER
OVEN for the one you want to set.
2. Press BAKE or CONVECT UPPER (on some models).
Press the number pads to enter a temperature other than the
one displayed.
3. Press COOK TIME.
4. Press the HR and MIN "up" or "down" arrow pads to enter
the length of time to cook.
5. Press START/ENTER.
The start time and stop time countdown will appear on the
oven display.
On double oven models only, when both upper and lower
ovens are being used at the same time, touch UPPER OVEN
or LOWER OVEN to display the respective cook time.
When the stop time is reached, the oven will shut off
automatically and "End" will appear on the oven display.
If enabled, end-of-cycle tones will sound, then reminder
tones will sound every minute.
Repeat the process by choosing the other option of UPPER or LOWER OVEN