-> Modify 'ssi_admin_style_(SSI Version).css' file inside graphics folder to hide side menus and table as per client need (this is a quick solution to get 1 custom admin link for the client).
-> Whether you are using your own company server/sawtooth hosting you must have got FTP credentials where you can host your file. Just create a fresh file and write simple PHP or Perl (Sawtooth hosting support PHP SQL and Perl both) code to connect to your study database and get counts. Place this file inside htdoc of your FTP server. This is almost like hosting website and you can do anything you want using HTML, CSS, Jquery, PHP, Tables, Charts, Graphs, Login Page etc.
This is a bit time taking approach but you can create any number of logins with custom layout via this.