With "User Selectable LDAP Context/Profile" set to "Show ldap profile", SSPR will show a drop-down menu to specify which profile to use to login. I'm wondering if there's a way to let user manually type in the name without needing the drop-down menu.

For example, I have profiles "abc" and "123", is it possible to type "123/User1" in the Username text box and login that way?
I'm aware that if you type "CN=User1,CN=Users,DC=123,DC=com" as username it would work but that's not really practical.