Correct way to create a panel and how to cut them?

[Ram80]

This guy just creates rectangles with edge cuts between the PCBs. He's using kicad.

https://youtu.be/3FGNw28xBr0?t=530

Is this the correct  way and if so how do you cut the PCBs apart from the panel?

[PGPG]

If you order PCB to being scored (word from Google translator, not sure) then you simply break out each PCB.
To ensure be clear: PCB gets V shape grooves on both sides leaving only a thin connection, easy to break.

The other solution is milling. To make panel for milling PCBs need be positioned in some distance (typically 2mm, I think).

I let making panel to contract manufacturer or PCB manufacturer as they know how many PCBs use at one panel to be optimal for format they use.

[tszaboo]

The video is not showing a very good technique.
You want V-Scoring or mouse bites. Or a combination of both. This you need to cut it yourself with a milling bit or saw or something, the other two can be disassembled without tooling at home, or using standardized tooling in production.

https://www.eurocircuits.com/panel-guidelines/customer-panel-basics/

[selcuk]

If you are using KiCAD, I recommend you to use KiKit plugin for generating panels. Deciding for V-cut or milling depends on the board shape. You can usually use V-cuts for rectangular boards.

https://github.com/yaqwsx/KiKit
https://www.eevblog.com/forum/kicad/how-to-panelize-with-kicad/