Premiere Creative CC Multi-camera workflow

For videos with different frame sizes:
**Always use Set to Frame Size to scale**

1. Drag all the media (two camera files, each with reference audio, and one audio file from an external recorder) onto the timeline of a new sequence.
2. Select the media on the timeline, right-click and pick 'Syncronize', using 'Audio' as the syncronize point.
3. Delete the audio files which you won't be using.
4. On the camera which needs to be upscaled, right-click it and select 'Scale to Frame Size'
5. Now that the two cameras and the one audio file is syncronized (and the 720p is stretched to 1080p), select the media on the timeline, right-click and pick 'Nest'.  Give your nested sequence a name.
6. Your clips are replaced on the timeline by a nested sequence.  Right-click it, and pick 'Multi-camera > Enable'
7. Use the multi-camera view (Shift-0) to play back the clips, and the number keys to make the edits between the two cameras.
8. Then to trim and edit that multi-camera sequence, I have to create another sequence.  In the project, right-click on your multicamera/original sequence, and pick 'Open in source window'.  You can now make edits from it, and drag it onto your new sequence.

For videos with the same frame size:
1. Import videos that have the overlap part.
2. Select them and right click to select "Create Multi Camera ..."
3. Add the newly generated file to the track. Click the icon  to open the multi-camera panel. Play the video and select the camera to use.