Inserting Measures Before Video

I'm running Sonar 8.3.1 Studio Edition.
 
I'm doing my first film cue for a class I'm taking, and the instructor wants to see two free measures before the cue starts.
 
Does anyone know how I can insert exactly two measures before the start the start of my first marker (it's only a couple of seconds in).  The measures need to be inserted in such a way that the marker will always line up with the beginning of measure 3 and remain at exactly the same SMPTE time on the video, even if I change tempos later. 
 
I've tried the "insert time/measure" command, and Sonar will insert measures into any audio or midi tracks I have selected -- but the video remains snapped to measure 1, and anyway it doesn't solve the issue of the marker starting exactly at the beginning of the measure. 
  
Any suggestions?  As always, any help is appreciated.
 
Regards,
GS