1. On the Icon bar, click Index.
2. Verify that the Index Collections button on the Index toolbar is set to Keywords.
3. Right-click any primary keyword in the upper left pane of the Index window and choose New from the shortcut menu.
4. The focus is moved to the Index Elements textbox. Replace <new> with the keyword you wish to add to the index and press Enter or click the adjacent check mark button.
Note that after pressing Enter, the keyword is added to the index list. The focus remains in the Index Elements textbox, allowing you to add multiple keywords.
Alternatively, you can add a new keyword by clicking the Project menu, choosing New, then clicking Keyword.