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You can open the mouse properties toolbox either by locating the mouse icon on your toolbar, or by searching Programs under the Windows menu for Logitech and opening MouseWare (PC) or Control Center (Mac) and mouse properties. A toolbox similar to the one shown below will open.

If your trackball has a wheel, the wheel functions both as a wheel and a button, though sometimes it's tricky to use it as a button without activating the scroll option. Use the wheel scroll for precise up and down movement. (The arrow keys and ctrl+arrows also produce the same movement).

Use the AutoScroll feature as often as possible. To AutoScroll, you may scroll without moving the wheel or clicking and dragging a button (both high-force movements that will stress the forearm muscles). To program a button or the scroll wheel to AutoScroll, use the "buttons" tab. To activate this feature, place the cursor in an application. Press the mouse button assigned to AutoScroll. The AutoScroll icon appears. Move the mouse once in the direction you want to scroll (vertical, horizontal, or diagonal). The farther you move the pointer from the starting point, the faster the scrolling. To stop AutoScroll, press any mouse button.

Always program one convenient button to perform the DragLock function when using a trackball. By programming one of the buttons to "drag" it is possible to avoid clicking and moving the trackball simultaneously which is used to select areas of data or phrases or move windows. This motion is very harmful to the hand! The drag button even works in such programs as Photoshop while using the various tools like the airbrush, cloning stamp, and paintbrush which normally require large amounts of "click and drag" motion. Click the button once to select the starting point, select or paint the area you want, then click again to capture the data or end the painting action.