From Manualslib:
STORING A PROGRAM
When your tweaking has resulted in a sound you're happy with, store (write) it!
1. Press the WRITE button (4.7).
The name display (3.1) shows "WRITE" and the bank display (3.4) and one of program LEDs 1–4 will blink.
Use value knob 6 (2.2) or the ▲, ▼ buttons (4.2) to select the bank you want to use, and use
2. the √ √ √ √ , ® ® ® ® buttons to select the destination program (1–4).
For example if you want to store your program in 9-1 (bank 9, program 1), use value knob 6 or the ▲, ▼ buttons to make the bank display show "9," and then use the √ √ √ √ , ® ® ® ® buttons to make the program 1 pedal LED blink.
HINT: You can also select the store-destination program by using the BANK UP/DOWN switches or the program 1–4 select buttons.
3. Press the WRITE button (4.7) once again.
The name display will indicate "COMPLETE." Your program is now stored, and you'll be back in Program Select mode.
NOTE: The program is written over the previous contents of that bank/program. The program that previously occupied the number you selected in step 2 will be erased.
NOTE: If you decide not to store your new program, press the EXIT/TUNE button (4.8) to cancel the procedure.
NOTE: If you switch to a different program or turn off the power without storing the program you edited, your changes will be lost.