TA Triumph-Adler DCC 6526L - Manual (Page 392)

Default Setting (System Menu)
8-147
8
7 Press the OK key. A confirmation screen appears.
8 Press [Yes] (the Left Select key). The selected
destination is registered to the one-touch key,
overwriting the previous one. Registered. is
displayed and the screen returns to the basic
screen.
Overwrite.
Are you sure?
z No. 1
[ Yes ] [ No ]