For our initial set up for endzone offence, we want to isolate a single person in the endzone to create space. This is what is referred to as an "iso".
Player 4 will make cuts side to side, looking to get open in the endzone
If they cannot get open, they will come out of the endzone, and whichever side they come out to, that player will make a diagonal cut to the opposite corner of the endzone.
In this scenrio, player 3 made a cut, and if they do not get the disc right away, they can cut straight across the endzone and look to get it on the other side