Use the Edit & Manage Citation(s) option (Citations group) to modify the way an individual citation appears in the text:
In the following example the year is excluded from the Pacheco citation:
In this example a prefix is added to the Emery citation:
The change only affects the display of the edited in-text citations.
Anything typed in the Prefix and Suffix boxes will always be displayed in the in-text citation. Use of the Pages box is determined by the output style.
Citations can also be inserted and deleted from the Edit Library Reference drop-down menu: