Final answer:
To configure the knowledge base search control, use Boolean operators in the search string with OR between the keywords: Elevator OR Motor OR Sizing.
Step-by-step explanation:
To configure the knowledge base search control to locate knowledge base articles that contain the words 'Elevator,' 'Motor,' and 'Sizing,' you can use Boolean operators in the search string.
Use the OR operator between the keywords to search for articles that contain any of the keywords. So the search string would look like: Elevator OR Motor OR Sizing.
This will return articles that contain any of the keywords, regardless of which product the article refers to. Using the OR operator broadens the search to include multiple possibilities.