You can search Agility for individual contacts and outlets, then add them to your existing list(s).
Step 1. Use the quick search (found in the upper right corner of the screen when logged into Agility) to find an individual contact/outlet. You can search by name, email or twitter handle.
Step 2. Click on the result that appears in the drop down to open the profile page of the journalist.
Step 3. Click on the Actions drop down (found in the upper right corner of the screen) and select Save contact to a list.
Step 4. Select save to an existing list. To add to a single list, select the list from the drop down and click on Save and Continue.
To add to multiple lists, click on the blue link > Select your lists > Click add > Click close.