Hi usf8197 and welcome to our community
One way that you might accomplish this would be as follows:
Record in multiple modes. Sounds as if you have that one
covered.
If you have ended, you might simply try recording the
remaining bits as a new project. If you do this, multi-mode should
again be available. So record the additional data and save.
Now you should be able to open each of the first projects and
import the slides and objects from the new recording so you might
extend the recording as desired.
Just a thought... Rick