Yamaha 02R Owner's Manual page 97

88 Mixing and Automation
Digital Recording Console 02R Getting Started Guide
CANCEL is the default. To cancel the STORE operation, either press the
[ENTER] button or wait about 10 seconds – the STORE operation will be
automatically cancelled.
To store your settings, use the CURSOR buttons to select the "EXECUTE"
control icon and press the [ENTER] button. The automix program is stored.
Note: If you decide you do not like an automix program after you have stored it,
it is very easy to overwrite it by creating a new automix and storing it to the same
location. Conversely, it is also very easy to accidentally overwrite a valued automix
program.
YOU SHOULD ALWAYS BE CAREFUL WHEN THE 02R DISPLAYS ITS
CONFIRMATION POPUP MESSAGE!