Battle Conditions/ Progression

So, I want to make a battle where waves of enemies attack the heroes, but the battle doesn't interrupt. I can get the enemies to appear halfway, but there is not an option to have multiple enemies get knocked down ( Their HP = 0). It only has one Condition option listed for one enemy.

So then I have 3 Bandits, all of which I want to be knocked out, before another wave of Bandits Appears and attacks. The only way I can do this is through Conditional Branches. Here, it only gives out a State. Now, if a chosen Bandit is Knocked Out, will that actually trigger what I need, which is all three getting knocked out?

P.S. If this is once again in the wrong section, I apologize.

the better way is to have one troop event for each enemy, and then count up with variables if one of the enemies is knocked out.
you need to do that anyway if you want all enemies dead before the next wave happens, because by default the battle ends with total death before the common events triggered by death are executed. So you need a fourth event applying an immortal state to prevent knockout, then for the first two bandits to remove the state (killing them) if they go to zero and the last enemy would trigger the next wave before being killed by removing the state.

would you mind giving me a visual reference, or picture, to show how this is done?

Huh. I guess not.

Well, I figured it out, for the most part. Thanks for the help.