A question about scroll bars

I am learning the official sample program: 2D Charts > Create Realtime Charts > 50-Channe EEG

I would like to modify this sample program to add a horizontal scrollbar and synchronize control of all channels， How do I do that?

The scrollbars need to be bound to an X-axis, but the charts in this example are in the ListBox and loaded from a template. How can I do this? Can you give me an example