To choose the number of intervals:

Highlight Number of times

Choose the number of intervals

and press 2.

and press J.

To enable or disable exposure smoothing:

Highlight Exposure

Highlight an option and

smoothing and press 2.

press J.

Selecting On allows the camera to adjust exposure to match previous shot in modes other than M (note that exposure smoothing only takes effect in mode M if auto ISO sensitivity control is on).

More on Photography 103