I am unable to get the dropdown of Associated and Unassociated choices within Manage Subjects > Assignments > More options, to show anything other than Unassociated.  I am aware that my Infinite Campus grade weights need to be set up as well as the setting up of my Canvas Groups (Formative/Summative/Practice) that match IC.  I do not see the list of these options in the dropdown, only Unassociated.  How do I tell Canvas to talk to IC for syncing of grades?