SC2Mapster

You need to give each unit in that ability a different cooldown link. Currently they are all sharing the same link and therefore cooldown on the unit.

So you want tthem to have a placement and be built instantly? Is there to be any distance limitation between placement and the creating unit?

There is an ability called Train which needs to be combined with the Queue ability. This allows you to make multiple units using one ability. Alternatives are theArm Magazine, Build and Warp Train abilities. You could even use a Create Unit effect or a Spawn behaviour.

You need to give more details as to exactly what you want.