Pentax Optio W90 Operating Manual page 142

Assigning a Function
1
Press the 3 button in A mode.
The [A Rec. Mode] menu appears.
2
Press the four-way controller
(23) to select [Green
Button].
3
3
Press the four-way controller (5).
A pull-down menu appears.
4
Use the four-way controller
(23) to select a function you
want to assign.
5
Press the 4 button.
The setting is saved.
6
Press the 3 button.
The camera returns to capture mode.
[Green Mode] is registered as the default setting.
140
Rec. Mode
3/4
Interval Shoot
Blink Detection
Digital Zoom
Instant Review
Memory
Green Button
MENU Exit
Green Button
Green Mode
Voice Recording
Fn Setting
MENU Cancel OK OK