Slow shutter

First, set the shutter speed dial either to T, or B.
Then, pull up the slow shutter dial on the camera top-right, and at the same time turn it clockwise.
After that, set the slow shutter speed (coincide a black-colored dot beside the number of slow shutter speed with the red colored dot inside).

Self-timer

Like did on slow shutter, turn the dial clockwise.
Then, set the shutter speed (one of either 1/5, 3/4, 3/2, 2, 3, 5, 6sec. graven in red color) by coinciding the red-colored dot beside the number with the red-colored dot inside.
The shutter will be released in around 13 sec. once depressing the shutter button.