If you go to the moremember.pl page, do you get an option to modify the
borrower information? EG change the borrowers name or address etc.
At the bottom of the modify page, there should be an option to debarr
(block) a borrower.
The options I have now is to Delete, Change Password or Modify User
Flags. In the Modify User Flags option I tried to untick the "Borrow
books" option but after the changes was done, the user could still
borrow books....
This "borrow books" means : the user can connect to the intranet
interface and borrow books for other => the user flag is, in fact, a
"librarian flags".