If you have an email locked and need to lock others to close them out since you are resolving the concern via phone or in another email...
- Click the search icon at the top near the word email
2. A text box will open, enter the email address you want to search. If you need to do a more complex search, click the little box that looks like a spreadsheet next to the text field.
Once the results display, you can lock the other emails to assign them to you.