For those of you who are adding attachments to your iObservation plans, you can do the same thing with links to the resources you already have posted online in order to decrease upload time and to avoid any sort of size limitations they give. Today I did a very short screencast to show you the general idea. As far as I know, following this method should work and give your administrator access to the item without needing you to upload it on to iObservations (assuming your privacy settings allow them to see it).
I had a teacher ask me if there was a way to hide or remove students who are no longer in your class. The answer is maybe. It depends on if they are officially dropped from your class and appearing as red in your roster and gradebook. If not, then no, you cannot remove them until they have been unenrolled from the class. If the student is showing up as red in your gradebook though, you can hide them so you don't have to worry about them. Here is a screenshot to help you do it: