How to insert silence into audio track?

Help/How To
1

I want to insert a silence into the audio track, to match the duration of the black which I have inserted into the video track. I could simply leave a gap in the audio, but that is too prone to accidental changes.
Is there a simple way to insert silence of a fixed duration (to be decided by me) in the audio track?

2

File > Open Other > Color. Color clips are silent, and you can put clips with video or imagery into an audio track. Audio tracks simply hide video and provide a simple organizational tool.
Otherwise, no, there is not way to make a duration of a clip fixed and unmodifiable.

3

What if you lock the track once you’ve created the gap?

4

In some cases that works but not if I’m working on audio at some other location on the timeline.

5

Thanks! Who knew?