In addition to editing a session using the Manage Debugging Sessions Window ("Managing Sessions"), you can also edit or even create a new session directly from any sessions window.

The Session Name field on each sessions window contains a dropdown that lists all previously created sessions of that type. For instance, from the Program Session window, you can access any session created in another Program Session:

Similarly, the Attach to a running program dialog displays any previous attach sessions:

If you select a previous session, you can edit any field’s values, even the Session Name to create an entirely new session. Then just click Start Session to launch that new debugging session.