Olympus Stylus Verve - Stylus Verve 4MP Digital Camera Advanced Manual page 52

Displaying several pictures at once G
Press
of pictures [4], [9] or [16] and press the
OK/MENU button.
The number of pictures in the index display
is set.
Press the OK/MENU button again to exit
the menu.
2
52
or to choose the number
G
4
9
16