Need help with API automation

Hi Community,

here is what Im trying to do without large coding experience.

I wanna set up a learning room in Gather.Town. Every User should be able to create a own room here (this allready works via API). Every Room should have a pre defined set of embedded Miro Boards, with Templates that shall be filled with content. Since the room generates automaticly via API triggered by Zapier. I also wanna duplicate the existing boards (that allready worked).
BUT!
The duplicated boards are always set on private. Therefore new users cant get access to them to edit. Is there a way to set the duplicated board on public or on password?
I found this:
https://developers.miro.com/reference/update-board
I actually can trigger Javascript via Zapier. So is that the way to set a automaticly duplicated board to public and editable?

Thank you!