Olympus IR-500 Reference Manual page 156

Setting regularly used functions to the custom button (z CUSTOM
BUTTON)
1
Turn the mode dial to q.
The setup menu appears.
2
Press a/c to select "CUSTOM BUTTON."
Press d to enter the custom button settings.
CUSTOM BUTTON
DIGITAL ZOOM
CANCEL SELECT
3
Press a/c to select the function you want to register to the custom
button.
4
Press 9.
The selected function is set to the custom button, and the screen returns to the setup menu.
156
GO
Mode dial
QU IC K
VI EW
abcd buttons
O K
OP EN
OP EN
9 button