Set trackpad options
You can set trackpad options that’ll affect clicking, secondary clicking, dragging, and more. Depending on your trackpad, you see only some of these configuration options.
Click
in the right side of the taskbar, click the Boot Camp icon 
, then choose Boot Camp Control Panel.If a User Account Control dialog appears, click Yes.
Click Trackpad.
In the One Finger section, select any of the following:
Tap to Click: Lets you tap the trackpad to click.
Dragging: Lets you move an item by tapping it, then immediately placing your finger on the trackpad and moving your finger.
Drag Lock: Lets you tap the trackpad to release an item after dragging it.
Secondary Click: Lets you perform a secondary click by placing one finger in a corner of the trackpad and clicking. Choose the corner you want from the pop-up menu.
Under Two Fingers, select Secondary Click to be able to perform a secondary click by placing two fingers on the trackpad, then clicking.