Try this.
OMLVU19619_E9
That's the owners manual for the 4320 on john deeres site.
If that doesn't work here's what it says about load match
"Using LoadMatch (eHydro)
LoadMatch enables the operator to prevent the engine stalling during heavy load applications such as operating with a loader. This feature is turned on and off using the display mode switch
1. Turn key switch to ON position.
2. No error codes should be displayed. If any errors are displayed, activate the display mode switch (A) to acknowledge the error.
3. Press and hold the display mode switch (A) until the display reads “rELEAS”.
4. The last edited command will display, either Coast or Load.
5. If Load is not displayed, use left or right turn signals to select the Load command.
6. Activate the display mode switch (A) to edit the LoadMatch setting.
7. The LCD (B) will display the last setting for LoadMatch, either On or Off.
8. Activate the left or right turn signals (C) to turn LoadMatch On or Off.
9. When the desired setting is displayed, activate the display mode switch (A) to store the setting.
10. The LCD (B) will flash the entered command twice and then change to the normal mode."