How can I access to the top screw on SliderPLUS?

Related articles

• How can I attach a tripod head on top of the SliderPLUS?
• My SliderPLUS bows or creates a "rainbow" effect on the tripod. Why?
• My SliderPLUS is not smooth as it is used to be. What can I do?
• My Slide Module v2 is displaying a "failed to move" error message. What can I do?
• Slide Module v2