ScrollRect Linker script, enable multiple Scroll Rects to move together
1 Overview
3 Methods
4 Usage
6 See also
The Scroll Rect Linker script allows you to control another Scroll Rect’s position from another Scroll Rect.

The properties of the Scroll Rect Linker control are as follows:
| Property | Description |
|---|---|
| Clamp | Clamp the linked scroll values |
| Controlling Scroll Rect | The parent Scroll Rect to retrieve scrolling changes from. |
This component does not expose public methods beyond inherited behaviour.
Simply add the default Scroll Rect Linker component to a Scroll Rect using:
“Add Component -> UI -> Extensions -> ScrollRectLinker”
Then drag the parent Scroll Rect to the appropriate property.
Click to play
Credit Martin Sharkbomb
Sourced from - http://www.sharkbombs.com/2015/08/26/unity-ui-scrollrect-tools/