I saw this B2B symbol on my Advanced account. Does anyone know what this is?

I went to the live site -Customize and I saw this under default.

I selected it but nothing happened to the website. I assumed this would open or allow for a B2B instance but perhaps I’m wrong.

To get detail insight into the B2B feature of Shopify please refer to the below URL.

https://help.shopify.com/en/manual/b2b

Let me know if you have more precise questions.