Assuming that you wanted to update this resource Department OBS, if it is true, you could check with the couple of options as below.
1. Check with your browser compatibility (check & try to update using all of the three browsers IE, Chrome, Firefox)
2. Try both the 2- ways (Home Page, Admin Page)
A.Try to update his/her resource Department OBS from his/her Resource profile.
B. Also try to update his/her Resource profile from Admin->OBS-> Unit -> Attached Instances -> Add
3. As a last option - Try to update his/her DEPT OBS using XOG (however try this first in DEV environment, 2nd in TEST environment & finally in PROD environment) to avoid any discrepancies/duplicate user accounts.
Best Regards
Jagadeesh