No, the installer shows the 64-bit Max directories on a separate page (they didn't all fit in a single page). Press "Next" after the page with the 32-bit directories. The location should be detected automatically on the second page.
The subtitle of that page, in the white area at the top, says that the 64-bit directories are on the next page. We'll move that note at the bottom of the 32-bit page to make it more visible.