I'm currently fiddling around with the editor but I got stuck with creating fire for light e.t.c. the way I went at it as there aren't any tutorials is opening a board of another user.

How to:
Subscribe and download the workshop map.
Open the following locations:
the workshop download folder:
SteamLibrary\steamapps\workshop\content\880940
the game template folder:
SteamLibrary\steamapps\common\Pummel Party\PummelParty_Data\StreamingAssets\WorkshopTemplates\Boards
Copy the numeric workshop id folder and rename it to something you'd recognise.
Start a new board from a template.

This way you can have a look. But if you use other's work, leave a credit for them within your workshop item :)