Unit Controll disabel and AI?

OK basically i am building a map for me and a friend to play

I would like the purchased creeps to spawn, move and cast abbiltyies without you controlling them?

I have seen it in some other maps

Any help would be kwl

add them 'aloc' (Locust-ability) and move them via triggers

Will they use non-auto cast abbilties on their own?

if you trigger them, then surely

Wicked! Thankz

But i am not good at triggering units and their skills? Any sugestions on where i can find a handy guide or example. .