You can customize your trackball buttons using Logitech SetPoint mouse and keyboard software.

NOTE: If you don't already have SetPoint installed, you can download it. See answer 360023192694  for instructions.

To customize your trackball settings:

1. Launch the Logitech SetPoint mouse and keyboard software.

   Start > Programs > Logitech > Mouse and Keyboard > Mouse and Keyboard Settings

2. Click the My Mouse tab at the top of the SetPoint Settings window.

   

3. Select your trackball from the product drop-down menu at the top left.

4. Choose the trackball button you want to customize in the Select Button field.

5. Choose the task you want to assign in the Select Task field.

   NOTE: You can click the “?” icon for descriptions of the settings.

6. Click Apply to save your settings and then OK to exit SetPoint.

NOTE: This is for illustration only. The options may vary depending on your product.