Hi Jay,
There are several ways you can do this. First off, I'd recommend downloading and printing as many of the mission- making tutorials in the EDITOR'S DEPOT as possible. It's where I started and found many of the basics covered.
That said, you can use variables in your triggers to be linked later.
Troops Start in Monroe, let's say
Trig1 "Take Lipany"
East - Not present
On Activation: papabear sidechat "Good work, men. Now let's go blow up some Commie tanks!"; TakeLip = true
Trig2 "Kill Tanks"
Condition: ! (alive ETank1) AND ! (alive ETank2) AND ! (alive ETank3)
On Activation: TanksDead = true
Trig3 "Evac at Monroe"
Type: End1
West - Present
Condition: this AND TakeLip AND TanksDead
Trig 3 will make sure the other 2 objectives are done before it triggers.
Also, you'll want to add these lines to your
Init.sqs:TakeLip = false
TanksDead = false