1. Open Active Directory and click the green search icon in the toolbar at the top of the window.
2. Set "Find:" to the type you are looking for and "In:" to "Entire Directory."
3. Enter the person's email you are wanting to edit, right-click their result, and select properties.
4. Left-click the tab "Member Of'" and select "Add..."
5. Enter the name of the mail server you want to add them to (ex: exchange cob).
6. From the list that appears, left-click the mail server (or ctrl + left-click to select multiple) and select "OK."
7. Now press "OK" on the current window, then "Apply" on the next window.