You can reset the copy function you changed to their default settings in the following ways.
Auto Reset
If you do not perform any operation for a certain period of time, all the copy settings for your copy job return to their default settings. The auto reset time is set to 3 minutes by factory default.
Memo
The auto reset time can be changed from [Device Settings] > [Admin Setup] > [Management] > [Operation Clear] > [Operation Timeout] on the touch panel.
Using [Reset] on the Touch Panel
If you press [Reset] on the copy top screen or each setting screen, the settings for your copy job return to their default settings.
Memo
When copying is complete, press [Reset] to reset the default settings for the next user.