Hi,

we had more or less the same challenge. users could be in Azure AD or Identity management system or local users.

First time login is always directed to SP landing page. then they select external or internal login. selected choice is then stored on user record.

There is two sys properties you need to set:

- glide.entry.first.page.script : new SPEntryPage().getFirstPageURL();

- glide.entry.page.script : new SPEntryPage().getLoginURL();

Then update your SPLogin script include to set another portal if needed.

End result for users that have no SSO set.