Thanks!

@GG/Phyllis

...and Roll (Elvis)

Ahahaha :-)

It has been very time-consuming and...

Really, take your time, please.

@Andrea paz

Please put it in the forum in the Tutorial section.

I am not in the Forum, but if you want, you can put it in the forum. The video is copyleft, royalty free (and there is the credit for the music). ;-)

Don't you want to put the 4 videos in Resources --> Media ( or
Proxy) and then select them all together and open the multiview at
once?

The "Open Mixers" option in Resources works only for Media folder, not for Proxy and Clips folders. And I have to use Proxy feature in the Viewer too, due to my HyperInterstellarWarpVelocity PC .
More, to synchronize the videos together you need trim/cut in the Viewer or in Timeline.
In the demo (from 0m54s to1m42s) you can see that the first three clips are trimmed in the Viewer with only the InPoint, because the OutPoint is setted automatically (great feature also this). The last, fourth clip (from 1m44s to2m06s), is trimmed on the timeline with "Ctrl+Alt+," shortcut (from cursor position to the beginning of the clip).

IgorBeg