Two videos on one screen

Hi,
Can you edit this video like the one on this Instagram page?
It is a two minutes video.
https://www.youtube.com/watch?v=4uJ_sMGQ6Do&fbclid=IwAR0jtbARD8AEQGFd5Xdx5sSYWabqFTsbRiHJMQJ1xzAk-KrrrZzcBUsk13Y
There are three videos on one screen on the Instagram page.
https://www.instagram.com/p/BobB2v6lz5q/?fbclid=IwAR0VsHJv7FLvciZXZntieZqTzvkD237S7sSX9tFrURYqKOxkRgbXmIyx43M
I want two videos, not three playing simultaneously on one screen for my Instagram page.
Each video time length can be 30 seconds.
So, the total length of the video will be one minute.
The first video starts with mixing colours, continues by adding colours into a mould and ends after the mould is removed.
The second screen starts with adding/sieving cement on the colour layer and continues with putting dry concrete on, removing the leftover.
You can skip the pressing mould scene.
The second video ends with a scene that she removes tile from the base table and shows it.
There is no need for any text.
You can use existing music during the video.
Kind regards
Mustafa