Can't find the name of the item in question in a manual or on Video Help. The Vertical line which moves from Left to Right when play back or recording. Now it moves to the right but the initial screen of data stays in the first position. I.e. it does not follow the vertical thingee. It has happened before and cannot remember the way to correct. Thanks for the assistance. 

I think you have Scroll Lock 'on' on the computer keyboard.

If editing during playback, the screen will stay at the current position until right-clicking in the timeline.
 
BTW, this forum is for older versions of SONAR. It is better to ask questions about X2 in the X Series forum above this one.

I thought that this operation was included on all, including X2.
 

In it's basic form it is.
 
But it's been enhanced with the X series, as described by scook above