Instead of running Exchange rebase or individual outlook rebase, can I mount users' mailboxes from an admin Outlook's profile and then run the Outlook tool?

Q: Instead of running Exchange rebase or individual outlook rebase, can I mount users' mailboxes from an admin Outlook's profile and then run the Outlook tool?
A: Yes, you can do this, but you would need to know the time zone for each of the mailboxes. The Exchange tool would discover the time zone for the mailboxes that contain the time zone data, then attach and rebase each mailbox. The Exchange Calendar update tool will update the calendar very similarly to the way you're describing.