Duckling, firstly, welcome to MR
The easiest way to change this is simply to change the title/author manually on Calibre. With Calibre displaying the 505's contents, double click on the Title field and amend it to remove the author's name; then double click on the Author field and type in the Author's name (I type it in as
surname,
forename).
I sometimes find that doing this doesn't 'take' the first time, i.e. when I disconnect the Reader from the computer the change hasn't been made. If this happens, try again (although it seems to be more reliable to make the changes in the Calibre library prior to sending to the device).
I have no doubt that there are other ways of doing this, but this works for me and is relatively straightforward for people with limited knowledge of computers.
Hope this helps.