Exit (ATM) strategy with multiple targets

I would like to be able to build a simple exit (or ATM) strategy where you can exit (scale out) via multiple targets. Even if there was a means to just split the limit orders after you have entered would be sufficient enough.

So for example i would like to enter with 4 contracts. I would like to take profit of 2 contracts at target 1 (e.g. 10 ticks). Then i would like to take profit at target 2 (e.g. 20 ticks). then target 3 would be at around 30 ticks - or whatever the market is offering.

An example below from Ninjatrader