List Segments Field Cannot be Edited

When setting the Number of Rows in List segments, sometimes the field cannot be edited.

To resolve this:

1. Open Setup
2. Select Company.
3. Select General Preferences.
4. Set the Number of Rows in List Segments to 1000.

If the field is still gray:

1. Scroll down the page to the tab Overriding Preferences
2. Check the box for Number of Rows in List Segments.