Setting the time on a Casio analog watch involves manipulating the time knob, which is usually located on the side of the watch and next to the watch face. In some analog Casio watches, this knob needs to be loosened by turning it counter-clockwise. Once the knob is loose, pull on the knob until it makes two clicks.
Set the time of the watch by turning the knob clockwise. In order to determine A.M. or P.M., look at the window displaying the date on the watch face while the knob is being turned. Once the date window changes, the coinciding time on the watch face is A.M. Once the time has been set, push the time knob in until it is once again seated in its socket in the body of the watch.
For Casio digital watches like the 3768 or 3769 models, set the time by first pressing and holding the button on the upper left-hand side of the watch. This will display the time and cause the seconds display to blink. Press the button on the bottom right of the watch body to reset the seconds. Press the button on the bottom left of the watch to configure daylight savings time. Press the bottom left hand button again to configure the hour. Use the top and bottom buttons on the right side of the watch to change the hour. Press the button on the bottom left of the watch to configure the minutes, and then use the top and bottom buttons on the right-hand side of the watch to make the time earlier or later.