1. Load the registration bank
2. Press the button you want to modify.
3. Change the tempo
4. Press Memory
5. Ensure the Tempo box, and all other groups you want saved, are checked.
6. Press the registration button (same one you loaded in #2)
— repeat for all buttons where you need the tempo changed
7. Tap the registration box on the screen
8. Choose File, Save, Save Here, OK, Yes
Cheers,
Fred