Clone yourself 4 times and pick your team (+1 alternate)
top
mid
jungle
bottom
bottom
top
mid
jungle
bottom
bottom
?
I think he pretty much means list the champs that you play in each role and that would be your team. And the +1 alternate just means list a second team for those who play more than 1 champ. Like my teams would be
top
mid
jungle
adc
support
id just play 5 ezreals and 1 shot the enemy team from my base with my 1600 damage ult x 5
top
JG
mid
adc
support