1. Reach out to IT support to get access to another users mailbox, Access will not be granted unless approved by a senior staff member. 

2. Once access is verified and acquired, Navigate to your own email address on the webmail outlook DO NOT use desktop app. 

3. After you have navigated to your webmail address, click your initials in the top right corner of the outlook search bar.  

4. Your profile settings should pop up, from there click "Open another mailbox" 

5. From there you will type in the email address of the account you requested access to. 

6. Once all steps are completed correctly you will be brought into the requested users mailbox. 

You can verify this by the url containing the requested email and your initials remaining at the far right side of the Outlook bar.