1. Go to Communication > eMail
  2. Manage your Campaign
  3. Select the Receivers for your mailing
  4. In the query pop up window, make appropriate changes to the query
  5. Click Save to Query Library
  6. Name the library (this will also be the name of the query)
  7. Click Submit
Your query has been saved.  Now, you can locate your saved query for other purposes in Sphere or select a saved query for a mailing.