You can do this by placing a generic entry in the FILEID file:
 
> * * = = filemode exitname exitparms
 
Where 'exitname' and 'exitparms' are optional.
 
However, you should be aware of the fact that this will allow these users
(I  assume they  will be  authorized to  update the  filelist) to  create
entries with real_name  = virtual_name for just  ANYTHING, including DISK
MODULE  and suchlike.  If the  disk is  accessed by  LISTSERV before  the
S-disk, you have a security exposure. So, you're back to square one :-)
 
Another solution would be to modify  the LSV$PUT EXEC exit to dynamically
create  entries in  both  the  FILELIST and  FILEID  files, after  having
performed some verifications as you may see  fit. Just have a look at the
example shipped with the LISTSERV code.
 
  Eric