This changes the current Time location on, and update style for Real Time Trend Groups only:
Interval Shift - The current time is on the left axis, and trends updates in a Shift of 1/4 screen (or the last division configured 1/2, 1/3, 1/4,or 1/5) when the end of the right end of the screen is reached. Until the last division is reached the screen updates continuously. The screen updates from left to right. This is the default.
Continuous Scrolling - The current time is on the right axis and the screen is updated each sample interval. When the end of the screen is reached, there will be a continuous line across the display. The screen updates from right to left. This mimics a strip chart recorder that has the pens on the right.