Where should I put the NoPin on Pinterest metafield definition?

Technical Q&A
1

I would like to disable pinning from my entire site, including all images.

I have the code:

…and I believe it goes into the metafield area ( Settings > Custom Data )

What next?

Thank you.

2

I got it here: https://www.youtube.com/watch?v=c5gRRQRx8JU