If a colleague has given you permission to see their calendar, make a note of their AUB userID. (You can look this up by searching for their name in the Global Address List, using Outlook and selecting Tools -> Address Book). Use OWA to go to http://owa.aub.edu.lb/USERNAME/calendar where USERNAME is their AUB userID. Log into OWA with your own AUB userID and password. This opens your colleague's calendar.