If a supporter needs to transfer ownership of their fundraising page to another person (friend, family member, etc.), you can edit the page's owner from the admin section.
This is also useful if supporters need to change their email addresses, as this can be done by transferring the fundraiser to a new owner with the same email address (but a different name).
To do this, go to administration --> fundraisers --> search for fundraiser --> choose "Change owner"
In the pop-up, you can now edit the owner's first name, last name, and email.
If you only need to change the name of the owner shown on the fundraising page—and not the actual owner or email—the easiest way is to edit the “Name shown” field when you edit the fundraising page.