I fiddled and I am now stuck.
In the security section, I checked the GUEST box, wanting to be able to gain access to a file without password. It worked.
Now, it only opens as guest, with data input only priveledges, and thus I can edit the layout. Security sectio in manage database is now greyed out.
Is there a way to revert to access using the admin login only so I can remove the guest access and go back to where I was ?