Sales Account - Shared Site - How and Where?

Hi

Oracle Documentation says that multiple customer accounts (within a party) can share the same customer account site.

I do not see any options while creating customer accounts from AR.

If you have seen this in CDM, then let me know, I would like to research that too. I don't see it in CDM either while creating organizations. Screenshot below for reference.

Is there a webinar or any other documentation on how to do this in the UI.

Thanks,

MKTHG