The best way to implement staggered exit

[alex.nt]

Greetings,

What is the best way in NinjaTrader to implement staggered exits?

For example, I enter position with 3 contract lots and the exit should be:
1) first contract exits at X1 ticks profit target
2) 2nd contract exits at X2 ticks profit target
3) The last goes until some condition is true

I know it is not a pure staggered exit but would appreciate your thoughts. May be NT has a native support for at least 1) and 2)

Thank you!