On any Web Services application within the Toolbox portal when assigning someone permissions you no longer have to include "@mycampus.edu" as long as the person is on your campus.
Example: In the past if I wanted to assign Jim Wilson access to a Calendar I would type "wilsonjr@illinois.edu". But now I only have to type "wilsonjr" since we are both on the same campus. If I was assigning access to Sherry Hutson on the Springfield campus I would still have to add her campus identifier (campus domain), shuts1@uis.edu.