IPTV PORTAL URL LINK 1

Hi,
Just bought a Magbox 254 got a "link" inserted in the box under Portal url 1 and it works! but I don't like the box and would like to go back to my DM800HD to see IPTV!
Can anybody tell me how I can put the same "link" in the DM800HD, I can not find a portal url in the DM?
Ps.: the "link" I have comes with playlist - countries -etc.
So I suppose I don't need to install a playlist, just to put the "link" in the right place in my DM800HD

Hope somebody can help me with a simple answer

Thanks