If you first press the Direct Access button, then one of the 8 reg. buttons, the screen will show each of the reg. names, and you can select the one you want either from the buttons around the screen or from the reg. buttons themselves.
Remember, after you save a registration, before leaving that Bank of registrations, you must also save the Bank. You will be prompted to do this, unless you turn the kb off before saving.
I wouldn't think it would be necessary to do a factory reset if you mess up. You can just delete the registration or bank.
DonM