Rick says in the Italy books and on line https://www.ricksteves.com/watch-read-listen/read/articles/making-museum-reservations-in-florence
about the
PassePartout Combo-Ticket: This pass offers a cost-saving, skip-the-line admission to the Uffizi, Pitti Palace, and Boboli Gardens—and covers the National Archaeological Museum and Museum of Precious Stones. It’s valid for five consecutive days (€38 March-Oct, €18 Nov-Feb; reserve Uffizi entry time upon purchase—and note you must visit the Uffizi before the other included sights; purchase the pass in advance at
https://www.b-ticket.com/b-Ticket/uffizi.
But it only goes to this URL: https://www.b-ticket.com/b-ticket/firenzemusei/ and has no mention of the Uffizi.
I'm confused on how to get a multi-pass and include the Uffizi.