Hi
It has to be the complete clip.. You can't stabilize sections of a clip or sequences saved from a clip AFAIK.
But you can do this....... It's a bit of a rigmarole though.
Start with all your clip/project on the timeline.
Move the cursor to the start of the section to stabilize and split the sequence.
Move the cursor to the end of the section to stabilize and split the sequence.
Save your project as a vpj file.
Delete the sections to the left and right of the section you have isolated.
Close the gap on the left so the clip to stabilize is at the start of the timeline
Export the clip e.g. as an avi.(or other convenient format)
Reopen your project and add the exported file to the media list. Right click and stabilize it.
Replace when prompted to.
Mute the section of the sequence that you isolated beforehand.
Step the cursor to the first split position. ( II< or >II button)
Right click the stabilized clip in the media list and Place on sequence at the cursor position on the overlay track.
This does work but can take some time to stabilize. You can delete the central section and replace it with the stabilized clip instead of muting and using the overlay track.
Nat