Sebastian is absolutely correct. The Admin guide is clear. Edit password gives the right to …
Change the password for your user account. To do
this, you also require the “Edit objects” right on your
user account.
Change the password for another user’s account. To
do this, you also require the “Edit objects” right and
the “Modify the rights users have to objects” right on
the user account.
Because “Edit Objects” is required, you can also change the other user parameters as well. Unfortunate.