So I checked the Adventures in Filemaker file and there is a neat little trick to hide the ID number when using a drop down list.
Alas, when I put the padding of the ID field to 500, it does indeed hide the number but the size of the blank space is twice as big as it should be.
Like it uses two blank rows before showing the first name in the list.
Is there anything I am doing wrong ? I tried several values under 500 but it doesn't seem to do the trick.