More help please

Well, I seem to get stuck in one place a lot, but this time it is kind of in many places but mainly about one thing. Leaderboard.

I want to know exactly how to use it. I want to get it where it records the amount of UNITS(not kills) a TEAM has(not player), but I don't know how to do that, since the leadeboard thing is very confusing.

Ok, next thing I want to know is, how can you make it where a TEAM wins by having a certain amount of UNITS(not kills)? Does this require the leaderboard or something?

Oh, that's less then I thought I would need help with, I will keep asking some questions though, this editor is very confusing. Well, thanks for all your help!

Make the board use custom values instead of kills and set the UpdateLeaderboard trigger so it adds 1 to that value whenever a player of the specific team makes a kill.

EX: Team 1 has Player 1, Player 2 and Team 2 has Player 3 and Player 4:

Name:
TeamKill1
Event:
A unit owned by Player 3 dies
A unit owned by Player 4 dies
Conditions:
(Owner of (killing unit) is Equal to Player 1) or (Owner of (killing unit) is Equal to Player 2)
Action:
Set Team1Kills to (Team1Kills + 1)
Run UpdateLeaderboard <gen> ignoring conditions

Name:
TeamKill2
Event:
A unit owned by Player 1 dies
A unit owned by Player 2 dies
Conditions:
(Owner of (killing unit) is Equal to Player 3) or (Owner of (killing unit) is Equal to Player 4)
Action:
Set Team2Kills to (Team2Kills + 1)
Run UpdateLeaderboard <gen> ignoring conditions

(UpdateLeaderboard is the trigger which just updates the values shown on the leaderboard. alternately you can just include the script instead of calling the trigger)