Where is External name?

In Add Attribute examples it says to enter in to the field "External Name. BUT I don’t see that attribute in the UI dialog. Screen shot attached

Do I have to have a special account type or something turned on? FYI, I just signed up today and am logged in via our Anaplan sso. (I think).

@tom.turner Hi, it looks like the example you follow is SCIM app however, your are configuring SCIM 2.0.
The external name can be seen in a SCIM app profile editor. To create a SCIM app, you can follow this article.

Thanks that is what I needed!