How can I stop sound track from being divided when adding clips to other tracks in PrE12?

Question

The situation:
I have a project with several minutes of video clips on the timeline (expert view) in "Video 1/Audio 1."  There is also music on the sound track (below the empty "Narration" track).
Any time I make an edit to the Video 1 track, PRE cuts the Sound Track.  (Note that this is not the Audio 1 track, it's the sound track which is two tracks away.)  If I insert a clip, the Sound Track is cut and left with a gap.  Same if I do a FreezeFrame insert.  This is bad enough (make ten insertions, have the Sound Track chopped into ten separate pieces), but it gets worse: when I try to slide the Sound Track pieces back together, the Video 1 clips will be moved around.
This appears to be a major bug but I'm hoping there is a simple way to deal with it.
Here's what the Manual (p.71) has to say about it (not much).
"When you insert a clip into the Expert view timeline, adjacent clips on all tracks shift to accommodate the new clip. By shifting all clips together, the audio and video of the existing clips remain in sync."
* The question here is, adjacent to what?  The Sound Track is a continuous music clip of many minutes; it is alone on the Track, and there is nothing on the track above it (Narration track).  So it's not adjacent to anything, and yet it is being chopped up.
The Manual continues:
"Sometimes, you don’t want all clips to shift with each insertion. For example, when you add background music that superimposes the entire movie, you don’t want clips to shift."
*They got that right, but they don't say anything about how to prevent it.
This next makes no sense at all:
"To shift specific clips togather, press the Alt key as you insert.  At a time, you can shift specific clips simultaneously on a maximum of two tracks.  These include the track receiving the insertion and the track containing the linked audio or video (if any). The affected tracks shift together, remaining aligned. The clips on other tracks are unaffected."
*There is no mention of how to specify what clips would be shifted, or not.
I'm not dealing with linked clips.  And they tell me how to shift clips (sort of) but nothing about how to stop clips from being cut up and shifted.  This all makes it very hard to create a coordinated product.
Any suggestions or solutions will be much appreciated.

Answer 1

Thanks, ATR,
I wll try this--but I still am unclear on how to do what the Manual says is possible: select clips on another track that WILL be moved, if I so desire, so as to remain synched to the main Video track.
UPDATE:
In the case of inserting Freeze Frame, I just tried both Ctrl method and Alt method, and neither worked.
1. Put Video on Vid1 track
2. Put Music on Sound Track
3. Ran a few seconds of Vid
4. Stopped Vid, selected Freeze Frame
5. Held down Ctrl key while clicking "Insert in Movie"  also tried with holding down Alt key.
Result: a 3 second still was inserted int the Vid1 track.  A corresponding gap was created in the Sound Track.
6. Slid the final part of the Sound Track to the left along the timeline to re-connect it to the next segment created by the above process.
Result: the video following the final Freeze Frame was pushed to the right end of  Video1 track.
7. Slid the Sound Track all the way to the left.
Result: the entire Video 1 Track contents were pushed to the right and divided in pieces.
I documented each step with screen shots which I can send if you want them and if I can figure out how to do it.
UPDATE #2
In the case of inserting a video clip to the Timeline, I just tried both Ctrl method and Alt method, and neither worked.
1. Locate video in Project Assets
2a. R click video in Project Assets (pull-down menu appears), hold down Ctrl, click Insert to Timeline.
Result: Vid clip is inserted on Video 1 track, Sound Track is separated with a corresponding gap.
2b.  R click video in Project Assets (pull-down menu appears), push Alt
Result: pull-down menu disappears as soon as Alt is pushed down.
I can stil drag the Vid clip but it's one more manual step...I love shortcuts!!