Which templates take a logo
Not every design has room for a logo, so the control appears only on templates built with a logo slot. If you need a logo on the card, pick a template that shows the Team Logo control in the details step rather than trying to add one to a design that has no place for it.
How the upload works
Choose Upload team logo, pick the file, and the builder removes the background so the mark sits cleanly on the card. Once uploaded, a logo is available to reuse on other cards from the same account, which keeps a team set consistent.
A clean, high-contrast logo file on a plain background gives the best result. A screenshot with other elements in it will not cut out cleanly.
Rights come first
The builder asks you to acknowledge that you have the right to use the logo before it is applied. Your own club's logo, used with the club's blessing, is the normal case. Professional team and league marks are trademarks, and the terms of service prohibit creating cards with copyrighted sports team logos without permission.