Add a MAC to the Adjustment group + visual feedback of setting

Let me start by stating that I am very new to this programming as well as this interface.  The program is functioning as expected. The request has been made to make one of the setpoints available for adjustment from the screen.  We would also like a visual to display the value on the home screen of our display.  I have added a "Linear Bar" graphic and "Value" to the display.

Issues:

Unable to add the item to the Adjustment Group (make this MAC adjustable by the user from the screen)

Unable to make the "linear bar" display the value currently set in the MAC.

Unable to make the Value display the value of the setting.