I would like to display employee hire date as part of their profile info in SharePoint online.
I know that custom attributes can be created directly in SharePoint, but for other reasons I need to create the attribute in our local, on premises AD instance.
I've created a new attribute ("HireDate") on the user object in the Active Directory Schema, per this article. It shows up in the list of editable attributes when I go to edit someone's AD profile. So far so good.
Now I would like to include that attribute along with the other profile information that gets synced to our Azure AD, using the Azure Synchronization Service Manager.
I know how to include built-in attributes that are not synced by default (ex, here), but haven't found a way to do that with a custom attribute.