1. Set the active time point as time #1.
    The time points can be manually selected in the following ways:
    Using the scroll bar in the Navigator panel.

    Using the time tools on the main icon bar (must be set in the preferences).


    Using short keys. By default, the time changes are assigned to the CTRL + B / Ctrl + F keys (the keys assignement can be changed in the preferences).
    Note: The short key method is the suggested one.
  2. Set the active cursor mode as following (mandatory):
  3. Switch back to the white arrow if you need to interact with the volume.

    Note: The volume visualization can be disabled if necessary (only in 4D view mode).
  4. Click on the segment you want to identify to be tracked.
  5. The segment will be highlighted either on both the image and on the object table.
  6. Go to the next time point (Ctrl + F).
  7. Click on the same segment to identify it.
  8. Keep the Shift key pressed while clicking on the object.
  9. The segment will be highlighted either on the image and in the object table.
  10. Repeat the selection until the segment path is completed.
    Note: From the second time point up to the end of the segment selection (over time), the Shift key MUST be kept pressed while clicking on the object.
  11. On the object table, right-click on one of the selected segments (grayed) to identify it.
  12. From the pop up menu, select Add Tags...

  13. Type in the new TAG name (e.g. Track#1). Press Add Tag.

    Note: Don‘t click anywhere else. This will deselect all the segments.
  14. The new TAG is shown inside the object table. It includes all the selected segments (please check).

Multiple segments can be grouped in different tags following the described procedure.