iBall 150M extreme wireless-n-router

I have set up my wifi router but i want to set password as we login with webpage. as page is follows
http://sdk.cpanel.net/twiki/pub/11_36/WHMDocs/CustomBrandedLoginPages/main.png

also i can't disconnect the other devices connected.

so how to add this page as loin page??
and how to disconnect other devices??