If you have turned off the option to suggest terms as you type, you can still insert terms into your references manually.
To insert a term from a Term List window:
Open a reference and position the cursor where you want to add the term.
From the Tools menu, select Open Term Lists and select the desired list.
Or, in an Author, Journal, or Keywords field, press Ctrl
+1 to display the appropriate list.
Double-click a term to insert it directly into the reference.
Terms can also be selected by typing the first few letters of the term, by using the Arrow keys, or by clicking on the term with the mouse. Hold down the Command ( )Ctrl key to select multiple terms. Press EnterReturn to insert the selected term or click Insert Term. If multiple terms are selected and inserted, they are listed in the reference one per line in alphabetical order.
Selected terms can also be copied from the term list using the Copy ( Ctrl+C) command in the Edit menu, and pasted into a reference using the Paste (Ctrl+V) command in the Edit menu.