The series picking modes enable you to pick a series of line segments. After you release the button to end a line segment, the cursor stays active to automatically start a new line segment at the location where the last segment ended. In Series Auto mode you provide a guide line and WinPICS attempts to locate your picks based on the event type you have assigned to that horizon.
If the words Series Auto do not appear on the Current Pick Mode button (located on the Seismic window's toolbar), you need to toggle off the current picking mode.
Click on the Current Pick Mode button and select Series Auto from the drop down list (or press <Ctrl> + <e> on your keyboard).
The words Series Auto will now be displayed on this button.