Press [Setup] , Channel Attributes, [Enter] [S7], Link List, to reach the Link List display
When two or more channels are used together, such as the color and intensity channels for a color scroller, the Link List allows you to determine which axis of the trackpad will control each channel. When you select a channel, it is placed under the control of one axis of the trackpad and all channels linked to it are also selected and placed under control of the other trackpad axis.
Links may contain up to ten channels on each of the X and Y lists. Channels on the X list are controlled by the X-axis and are shown in gold in displays; channels on the Y list are controlled by the Y-axis and are shown in yellow in displays. Each channel may appear in only one link. All channels in a link from one list are selected if any channel is selected from the other list.