First you hear the main sound.
Then by itself, the secondary sound (saw lead).
Then both together

This is the main sound:

the secondary sound (33%) will be a “saw lead” with the portamento on.
Saw Lead sound should be set on MONO so only one note plays at a time.
Portamento on. (portamento is the fast slide between two notes).

Email me to help!
-D. J.