What do i need in the url after my iptv provider for accessing epg and channel list requiring a login?

When i use iptv smarters or gse iptv it only asks for the url, login and password seperately and nothing else.

Apps such as myiptv require the full link with the login and password within to access the epg or channel list.

My question is, if i can use gse and smarters there must be a default link they convert the 3 inputs to link directly to epg etc for example http://iptvurl.com/login=xxx?pass=xxx-epg.php

Where iptvurl would be my iptvs link?

Many thanks